Nuk the rule is this.. as long as the contact is not at the bequest of a school employee or booster than its fine.. and it only pertains to those kids in High School already. although it is is not permissible for a high school kid to persuade a middle school kid to come for "athletic purpose".. if all the kids are not in HS and decide to go to the same school thats fine as long as it wasn't persuaded by anyone who is a HS employee or booster or current HS student
10.2 Illegal Contact with Students, Student’s parent(s), legal guardians, or a Relative Caregiver
10.2.1 A school employee or Board approved volunteer may not initiate contact or request that a booster club member, alumnus, or player initiate contact with a student enrolled in another school or his/her parent(s), legal guardian(s) or a Relative Caregiver in order to persuade the student to enroll in a particular school for athletic purposes. Illegal contact shall include, but not be limited to, letters, questionnaires or brochures, telephone calls, and home visits or personal contact at athletic contests.