Blackwattle Bay is the senior campus of Sydney Secondary College with approximately 800 students. The school is located on the foreshore of Blackwattle Bay, Glebe and is easily accessible by public transport. The school offers an extensive senior curriculum to cater for the needs of the diverse student body. The student population includes students in an academically selective stream, students in the support unit with a diagnosis of autism, mild or moderate intellectual disabilities, a small, but significant, Aboriginal student population and an increasing number of International students in 2022. Blackwattle Bay students achieve outstanding academic results each year in the Higher School Certificate examinations. All students are supported by a strong welfare program.