Below is an context that describes a sql query, paired with an question that provides further information. Write an answer that appropriately completes the request.  # noqa: E501
### Context:
CREATE TABLE table_29970488_2 (hometown VARCHAR, previous_school VARCHAR)
### Question:
How many hometowns are there when Charis Prep was the previous school?
### Answer:
SELECT COUNT(hometown) FROM table_29970488_2 WHERE previous_school = "Charis Prep"