private void btn_RubricLevel_Click(object sender, EventArgs e)
        {
            RubricLevel RL = new RubricLevel();

            RL.Show();
            RL.Refresh();
            RL.Location = this.Location;
            this.Close();
        }
        private void button1_Click(object sender, EventArgs e)
        {
            RubricLevel RL = new RubricLevel();

            RL.Show();
            RL.Refresh();
            RL.Location = this.Location;
            this.Hide();
        }