She became a Master in Management and Evaluation of Public Education from the Federal University of Juiz de Fora, in Minas Gerais.

Before entering public life, Izolda worked as a school psychologist at Colégio Sobralense (1986 and 1988), was part of the pedagogical board of the Arco-Iris School (1989), and gained clinical experience in child care when working at the Integrated Development Clinic (1991-1995), all in the municipality of Sobral.

On August 14, 2015, Izolda was considered the first woman to assume the government of Ceará, due to Governor Camilo's official trip for a week.

She was appointed by president Lula as Executive Secretary of the Ministry of Education of Brazil on 19 January 2023[1] and she stayed in office until 30 May 2024, when she announced her resignation in order to run in the 2024 Brazilian municipal elections as a potential candidate for mayor, either in Fortaleza or in her hometown, Sobral.

[8] (PROS, PT, PRB, PP, PDT, PTB, PSL, PRTB, PHS, PMN, PTC, PV, PEN, PPL, PSD, PCdoB, PTdoB, SD)