Holders of the residence permit referred to in Art. 1 sec. 2 lit. and of the Council Regulation (EC) No. 1030/2002 of 13 June 2002 laying down a uniform format for residence permits for third-country nationals (Official Journal EU L 157 of 15.06.2002, p. 1, as amended) or a long-term visa, with the annotation "student", issued by another Member State of the European Union applying the Directive (EU) 2016/801 of the European Parliament and of the Council of 11 May 2016 on the conditions of entry and residence of third-country nationals for the purposes of research, studies, training, voluntary service, pupil exchange schemes or educational projects and au pairing (recast) (Official Journal UE L 132 of 21/05/2016, p. 21) (this does not apply to residence permits or long-term visas issued by Ireland and Denmark), including by an EU  country not belonging to the Schengen area, may use the student's mobility on the territory of the Republic of Poland for a period not exceeding the period of validity of this residence permit or long-term visa, which means the right to enter and stay in order to continue or complete studies undertaken in the territory of another European Union Member State - for up to 360 days, regardless of the possibility of using this mobility in other EU Member States applying the Directive 2016/801/ EU, under certain conditions. 

According to Art. 149b of the Act of 12 December 2013 on foreigners (Journal of Laws of 2024, item 769), a foreigner who is a student or doctoral student may take advantage of the student mobility if the following conditions are met jointly:

1.  the purpose of his stay on the territory of Poland is to continue or supplement his/her studies undertaken in the territory of another European Union Member State;
2.  the foreigner is covered by an EU program or a multilateral program covering mobility measures or an agreement between at least two higher education institutions providing for intra-EU mobility;
3. a foreigner's residence permit referred to in Art. 1 sec. 2 lit. and of Regulation No. 1030/2002, or a long-term visa issued by another Member State of the European Union, contains the annotation "student";
4. the period of stay in Poland does not exceed 360 days. 

The condition for a foreigner to take advantage of student mobility on the territory of Poland is that the Head of the Office for Foreigners:

• received a notification of the foreigner's intention to use this mobility from the unit conducting studies based in Poland, approved by the minister competent for internal affairs, unless this unit is not subject to approval, or from the unit conducting studies which is not subject to approval, in relation to which a decision on the prohibition of admitting foreigners has not been issued,
• has not issued a decision on objection within 30 days. 

The notification should be made in Polish language, it should be submitted in writing in paper form or in electronic form to the address of the Head of the Office for Foreigners for electronic deliveries, referred to in Art. 2 point 1 of the Act of November 18, 2020 on electronic deliveries (ePUAP). A formal notification template has not been specified.

The notification should contain the following data and information concerning the foreigner:

1. First name (first names) and last name;
2. Date and place of birth;
3. Gender;
4. Citizenship;
5. The series, number and expiration date of the travel document held by the foreigner;
6. Planned period or periods of continuation or completion of studies in Poland (planned duration of the mobility);
7. The name of the EU Member State that issued a residence permit or a long-term visa with the "student" annotation;
8. The period of validity of the residence permit or period of validity and the permissible period of stay indicated in the long-term visa referred to in point 7;
9. The name of an EU program or multilateral program covering mobility measures or an agreement between at least two higher education institutions providing for intra-EU mobility;
10. The name and address of the higher education institution with its seat on the territory of a Member State of the European Union referred to in point 7 in which the foreigner was undertaking studies until now; 
11. The name and address of the higher education institution with its seat on the territory of the Republic of Poland in which the foreigner intends to continue or supplement the studies undertaken on the territory of another EU Member State; 
12. The name, surname, official position and signature of the person or persons authorized to represent the higher education institution based in the territory of the Republic of Poland. 

The following should be attached to the notification:

1. proof of possession by the foreigner of the residence permit referred to in Art. 1 sec. 2 lit. a of Regulation No. 1030/2002, or a long-term visa, issued by another Member State of the European Union, containing the annotation "student";
2. proof that the foreigner has health insurance within the meaning of the Act of 27 August 2004 on health care services financed from public funds or confirmation that the insurer covers the costs of health treatment on the territory of the Republic of Poland;
3. proof that the foreigner has sufficient financial resources to cover the costs of living and return travel to the Member State of the European Union which issued the foreigner with the residence permit referred to in Art. 1 sec. 2 lit. and Regulation No. 1030/2002, or a long-term visa, with the annotation "student", in the required amount includingproof of the amount of the costs of accommodation in Poland
4. proofof payment of the tuition fee by the foreigner, if the continuation or supplementation in Poland of the studies undertaken in the territory of another European Union Member State is payable (or confirmation that studies in Poland are free of charge). 

The amount of monthly financial resources, after deducting the funds intended to cover the costs of accommodation, which the foreigner possess to cover the costs of living, should be higher than the amount of income entitling to cash benefits from social assistance specified in the Act of 12 March 2004 on social assistance in relation to a foreigner and each dependent family member (financial resources should exceed PLN 776 for single persons or PLN 600 for persons in a family member, after deduction of the foreigner's accommodation costs in Poland).

It is believed that the costs of accommodation include at least the amount of fixed fees related to the use of the occupied premises in settlement for the number of persons residing in the premises, as well as fees for supplies to the premises of energy, gas, water and collection of sewage, waste and liquid waste;

The deduction of funds intended to cover the costs of accommodation in Poland does not apply to citizens of Belarus.

The funds required to cover the costs of the return journey are: PLN 200 - in the case of a neighbouring EU country, PLN 500 in the case of other EU countries. 

Documents that may confirm the possibility of obtaining funds are specified in the Regulation of the Minister of the Interior and Administration of February 6, 2018 on the amount of funds that a foreigner undertaking or continuing studies in the territory of the Republic of Poland must have (Journal of Laws of 2022, item 78) https://isap.sejm.gov.pl/isap.nsf/DocDetails.xsp?id=WDU20220000078

These are :

1. traveler's check;
2. a certificate of the credit card limit issued by the bank that issued the credit card;
3. a certificate confirming that the foreigner or the person on whom the foreigner is dependent has financial resources in a bank or a cooperative savings and credit union with its registered office in the territory of the Republic of Poland or another European Union Member State, a Member State of the European Free Trade Association (EFTA) – a party to the agreement on the European Economic Area or the Swiss Confederation;
4. a document confirming the award of a domestic or foreign scholarship;
5. certificate of employment and the amount of earnings of the foreigner or the person on whom the foreigner is dependent.

The certificates referred to in points 2, 3 and 5 shall be issued not earlier than one month before the date of submitting the notification.

To convert funds held by a foreigner into the Polish currency, the average exchange rate of this currency announced by the National Bank of Poland on the last working day preceding the submission of the notification is used. 

Documents drawn up in a foreign language are attached together with a sworn translation into Polish (a translator entered on the list of sworn translators of the Minister of Justice in Poland).

The period of 30 days for issuing a decision on the objection is counted from the date of delivery to the Head of the Office Foreigners of the notification together with all the above-mentioned documents and with a certified translation into Polish of documents drawn up in a foreign language. 

The Head of the Office issues a decision on the objection if:

1. the period of validity of the residence permit held by the foreigner referred to in Art. 1 sec. 2 lit. a of Regulation No. 1030/2002, or a long-term visa, issued by another Member State of the European Union, containing the annotation "student", does not cover the period of the planned mobility of the student or
2. the foreigner does not have health insurance, or
3. the foreigner does not have sufficient financial resources to cover the costs of living and return travel to the Member State of the European Union which issued the foreigner with the residence permit referred to in Art. 1 sec. 2 lit. a of Regulation No. 1030/2002, or a long-term visa, with the annotation "student", in the appropriate amount, or
4. the foreigner has not paid the tuition fee, or
5. the unit conducting the studies acts mainly in order to facilitate unlawful entry or stay on the territory of the Republic of Poland for students or doctoral students, or
6. the unit conducting the studies does not conduct actual activity consisting in conducting studies or is in liquidation, or
7. the notification contains untrue personal data or false information or the documents attached to it contain such data or information or have been counterfeited or altered, or
8. the entry of the foreigner's data into the list of foreigners whose stay on the territory of the Republic of Poland is undesirable is valid, or
9. the foreigner's data are in the Schengen Information System for the purpose of refusing entry, or
10. it is required for reasons of state defence or security or the protection of public safety and order. 

The unit conducting the studies based in the territory of Poland should submit a notification of the foreigner's intention to use the student mobility (individually for each foreigner) together with the required documents and translation early enough and take into account the possibility of issuing a decision on the objection by the Head of the Office for Foreigners within 30 days.

The notification may be submitted before or after the foreigner enters Poland. A foreigner may enter the territory of Poland on the basis of a residence permit or a long-term visa with the annotation "student" under the Schengen regulations (stay not exceeding 90 days in any 180-day period), i.e. on the general rules regarding the entry and stay of foreigners and start the purpose of stay covered by the notification of intention to take advantage of student mobility, before completing the procedure for this mobility, provided for in art. 149b of the Act on Foreigners. However, he/she will not be able to stay on the territory of Poland for a period exceeding 90 days in each 180-day period on the basis of a long-term visa or residence permit with the annotation "student", issued by another EU Member State if the notification procedure was not positively completed until that time.

The moment of submitting a notification of the foreigner's intention to use the student mobility should take into account, above all, the period of stay to which the foreigner entering Poland is entitled. The mere submission of the notification does not legalize the foreigner's stay in Poland.

Submitting a notification of the intention to use the student's mobility in advance, e.g. 60 days before the end of the foreigner's legal stay in Poland as part of a short-term stay under the general rules of the Schengen regulations, will make it possible to supplement any possible deficiencies in the notification. 

The information you may find also here: 

https://mos.cudzoziemcy.gov.pl/en/uniknij-bledow/film_mobilnosc_studenta-en/film-mobilnosc-studenta-en 

https://mos.cudzoziemcy.gov.pl/en/uniknij-bledow/infografika-mobilnosc-studenta-en/mobilnosc-studenta-en 

(in Polish) : https://www.mos.cudzoziemcy.gov.pl/informacje/mob-stud-rp/wprowadzenie

The notification of the foreigner's intention to use the student mobility in Poland by the unit conducting studies based in Poland is necessary to initiate the notification procedure. Therefore the University should also agree to initiate the procedure for the foreign student. If this is not a case you may apply to the voivode competent in regard to your place of stay in Poland (I instance province governmental authority) for a temporary residence permit within the period of your legal stay in Poland (up to 90 days within each 180 day period in the whole Schengen area on the basis of residence permit issued by another Member State of the European Union). Temporary residence permit may be issued if the purpose of stay in Poland exceeds 3 months.

Holding two temporary residence permits from two different EU member states at the same time should not constitute a problem in this situation.