Most Ontario high school students think sex-ed classes should include all sexualities, but say cellphones have no place in the classroom, according to a student-led survey released Thursday.

More than 2,600 students from 69 of the province's 72 school boards weighed in on issues from bullying to standardized testing in a survey organized by the Ontario Student Trustees' Association.

Students were clear on some matters, such as sexual diversity in sexual education courses, the use of cellphones in classrooms and the need for student councils in middle and high schools.

But they were split on questions about expanding mandatory physical education to all high school grades or starting the school day later.

About half of students said they saw academic benefits to starting the school day later at 10 a.m.

Zane Schwartz, the student trustee who led the project, said students are the best measure of how education policies play out in the classroom.

The survey aims to "start a conversation" between students and adults, particularly decision-makers in the education system, he said Thursday.

"We really just want to give students a voice in these things that are in their classes every single day," he said.

The survey's questions were chosen from thousands submitted by students, Schwartz said.

The majority of students in both public and Catholic school boards — 82 per cent overall — said they believe all sexual orientations should be discussed in sexual education classes.

Nearly three-quarters were opposed to using cellphones as an educational tool, with some warning that the devices can be distracting.

Students overwhelmingly called for the right to see their provincial tests after the exams have been marked. Ninety-two per cent were in favour.

"I learn a lot from seeing what I've done wrong on tests," a student from the Peel district school board commented in the survey.

Close to 89 per cent said every middle and high school should have a student council.

Students were split on mandatory physical education, with just over half opposed to extending the requirement until the end of high school.

And more than half -- 54 per cent -- reported having been bullied.

Students in the Ottawa-Carleton Catholic District School Board reported the most bullying, with 59 per cent saying they had experienced it.

The York Region District School Board reported the lowest rate of bullying at 36 per cent.

The survey ran from November to January and was performed mostly on Facebook.

Schwartz said the association is planning a follow-up survey based on questions suggested by students who completed the study.