alternative education options:
in person:

Gary Allan Learning Centre
This learning centre is the Continuing Education Department of HSDB. Providing summer and night school for elementary and high school students as well as adult language and credit courses.
Located in Burlington, Oakville, Georgetown and Milton

OYAP
“The Ontario Youth Apprenticeship Program (OYAP) is a specialized program in high school that allows you to explore apprenticeship and consider careers in the skilled trades, generally starting in Grade 11 or Grade 12 through the cooperative education program.”
Recruiters located across Ontario
online:

TVO Ilc
A non-profit organization with 140+ high school courses, with no teacher-led sessions and each course having a mandatory final test.
They also offer the Canadian Adult Education Credential that is equivalent to a GED

Ontario Virtual school
“The founding principle of OVS is that every student can be successful and reach their academic potential when they are engaged and active in their learning.”
They also offer free non-credit courses

Blyth Academy Online
Self-paced online courses for grades 5 to 12 each of which is paid for individually.

Prisma Online school
Online project-based programs for grades 4 to 12, where students demonstrate understanding by completing a project of their choosing.
PRIVATE SCHOOLS In THE GTA:

Star Academy
Star Academy is a small private school with small class sizes, ranging from 10 to 14 students for kindergarten to grade 8. The small class sizes allow teachers to provide individually attention to each student
Located in Mississauga

Best Brains
Provides individualized attention with teachers working with students 1-on-1 in small groups. Students meet with teachers weekly and practice concepts daily. Best Brains also offers online programs and day camps
PRIVATE BOARDING SCHOOLS:

The Boundless School
Located in Palmer Rapids (Ontario), Boundless provides adventure-based education through boarding school sessions to earn high school credits and community programs for Indigenous youth.
educational travel:

Edu Travel
“Students earn transferable credits with the course content and assessments that connect directly to destinations, activities and workshops, guided tours, field studies, novels and readings.”