Will the children get French as a second language (FSL) instruction at school ?

Yes. Since French is one of Canada's two official languages, students in Ontario's publicly funded English-language schools are required to study FSL from Grades 4 to 8.

FSL programs are for all students in English-language boards, including students with special needs and English language learners. 

For more information, please read this webpage from the official website of the Ontario government.