sure she or he will not apply for H 1 or green card in the future, you can go to public school
but if in the future, she or he wants to work or stay in the US, there will be a big trouble for his or her green card application if he or she went to school with B2 visa
but if in the future, she or he wants to work or stay in the US, there will be a big trouble for his or her green card application if he or she went to school with B2 visa