The number of boys in a school is 120. If the ra to of boys to girls is 2:3, find the total number of student in the school

The ratio of boys to girls is 2:3. Since 2 + 3 = 5 parts, each part represents 120/2 = <<120/2=60>>60 students.

Therefore, the number of students in each part is 60, so the total number of students in the school is 5 * 60 = <<5*60=300>>300 students. Answer: \boxed{300}.