Teachers were forbidden from striking by law and the Puerto Rican government quickly achieved the de-certification of FMPR.
After the failure of these negotiations, FMPR led a nine-day strike of around 11,000 members, paralysing education in Puerto Rico.
The union accused the "charter" school system of being a way of transferring public money into private pockets, motivated by corruption.
[7] The next year, FMPR sued the Department of Education on behalf of a group of high school teachers in Toa Baja, stating they had not been properly paid.
[9] FMPR led protests through San Juan in February 2022 against a debt adjustment plan that reduced teachers' pensions and increased the retirement age to 63 years.