		Mean	N	Standard. Deviation	Standard Error Mean	t
Pair 1	6th Std. Tamil average mark	55.36	52	17.147	2.378	−1.783
Pair 1	7th Std. Tamil average mark	57.60	52	16.722	2.319	−1.783
Pair 2	6th Std. English average mark	59.43	52	15.833	2.196	−0.926
Pair 2	7th Std. English average mark	60.47	52	13.604	1.886	−0.926
Pair 3	6th Std. Maths average mark	62.18	52	18.575	2.576	3.467^**
Pair 3	7th Std. Maths average mark	57.09	52	16.933	2.348	3.467^**
Pair 4	6th Std. Science average mark	55.72	52	19.455	2.698	−2.537^**
Pair 4	7th Std. Science average mark	59.99	52	15.665	2.172	−2.537^**
Pair 5	6th Std. Social average mark	67.45	52	19.394	2.689	4.726^**
Pair 5	7th Std. Social average mark	58.60	52	16.414	2.276	4.726^**