private void buttonBack_Click(object sender, EventArgs e)
{
authorizationTeacher authorizationTeacher = new authorizationTeacher();
this.Hide();
authorizationTeacher.Show();
}
private void buttonWorkWithText_Click(object sender, EventArgs e)
{
authorizationTeacher authorizationTeacher = new authorizationTeacher();
authorizationTeacher.Show();
}