Below is an instruction that describes a task. Write a response that appropriately completes the request.

### Instruction:
How many of the schools are designated private/Presbyterian?

### Inputs:
table_name: table, columns: ['School', 'Location', 'Founded', 'Affiliation', 'Enrollment', 'Team Nickname', 'Primary conference']

### Response:
SELECT COUNT Location FROM table WHERE Affiliation = Private/Presbyterian