private void select_Click(object sender, EventArgs e)
{
this.Hide();
teacherQuestionChoice tqc = new teacherQuestionChoice(comboStudents.Text);
tqc.ShowDialog();
}
private void pictureBox1_Click(object sender, EventArgs e)
{
Hide();
teacherQuestionChoice qChoice = new teacherQuestionChoice(_studentName);
qChoice.Show();
}