		Mean	N	Standard. Deviation	Standard Error Mean	t
Pair 1	6th Std. Tamil average mark	52.00	48	15.684	2.264	−1.041
Pair 1	7th Std. Tamil average mark	53.60	48	15.994	2.309	−1.041
Pair 2	6th Std. English average mark	55.10	48	14.565	2.102	−2.072^*
Pair 2	7th Std. English average mark	57.38	48	14.013	2.023	−2.072^*
Pair 3	6th Std. Maths average mark	61.06	48	18.778	2.710	2.679^**
Pair 3	7th Std. Maths average mark	56.38	48	16.086	2.322	2.679^**
Pair 4	6th Std. Science average mark	53.81	48	18.571	2.680	−2.804^**
Pair 4	7th Std. Science average mark	57.71	48	15.545	2.244	−2.804^**
Pair 5	6th Std. Social average mark	63.25	48	19.165	2.766	4.585^**
Pair 5	7th Std. Social average mark	55.15	48	16.151	2.331	4.585^**