Ontario Secondary School Diploma or equivalent including six Grade 12 U or M courses with minimum grade of 70% and minimum average of 80%.
OR

Mature applicant with a final grade of 70% and minimum four course average of 80% (must have completed any required math or science courses within the last five years).
Required courses - minimum final grade of 70% in each:

English: Grade 12 ENG 4(U)

Mathematics: any Grade 12(U)

Biology: Grade 12 SBI 4(U)

Chemistry: Grade 12 SCH 4(U) or Physics: Grade 12 SPH 4(U)
Applicants who have previously attended postsecondary studies must disclose all previous transcripts and, in addition to the required courses, must achieve the following:

For Previous University Studies: At least four full courses or one year of full-time degree studies at a recognized university. GPA requirements will be determined annually.
For Previous College Studies: At least two full semesters or one year of full-time studies at a recognized college with a minimum GPA of 3.3 (B+/75% or equivalent).
When applying to a Seneca degree program you must submit:

High school transcripts for grades 10, 11 and 12 showing all program specific pre-requisite courses.
Transcripts must include six (6) senior level courses equivalent to Ontario university preparatory credits with an overall average of 65%.
High school/secondary school diploma (certificate of completion).
You may submit transcripts or certificates for any completed university/postsecondary college courses or programs taken inside or outside of Canada.
Academic records that are in a language other than English must include an official/certified English translation.
IELTS Academic - Minimum 6.5 with no skill below 6.0, TOEFL iBT - Minimum 84 with no skill below 21 , TOEFL Revised Paper Delivered - No skill below 21