| Northcliff High School | |
|---|---|
| Address | |
 | |
Mountain View Drive, Blackheath , | |
| Coordinates | 26°07′48″S 27°57′52″E / 26.130134°S 27.964437°E |
| Information | |
| School type | Public |
| Motto | Nihil Tam Altum (Nothing so high) |
| Established | 1969 |
| School district | District 9 |
| Principal | Mr Essex-Clarke |
| Teaching staff | 56 |
| Grades | 8–12 |
| Gender | Boys & Girls |
| Age | 14 to 18 |
| Number of students | 1,500 pupils |
| Average class size | 22-35 |
| Language | English |
| Schedule | 07:30 - 14:00 |
| Colour(s) | Blue Navy White |
| Rivals |
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| Accreditation | Gauteng Department of Education |
| Website | www |
Northcliff High School, commonly known as Northcliff High, is a public English medium co-educational high school located in the suburb of Blackheath in Johannesburg in the Gauteng province of South Africa. It is one of the top and most academic schools in Gauteng. The high school was established in 1969.