Table 1: Descriptive statistics of self-concept dimensions based on class and gender.

Variables	Appearance Self-Concept			School Self-Concept			Parents Relations Self-Concept			Peer Relations Self-Concept
Gender	N	M	SD	N	M	SD	N	M	SD	N	M	SD
Males	329	3.87	0.65	329	3.48	0.71	329	4.17	0.58	329	3.71	0.70
Females	322	4.10	0.54	322	4.08	0.58	322	4.32	0.61	322	4.00	0.69
Class	–	–	–	–	–	–	–	–	–	–	–	–
7	233	4.16	0.63	233	3.89	0.71	233	4.35	0.54	233	3.92	0.75
9	184	4.04	0.66	184	3.64	0.77	184	4.18	0.61	184	3.86	0.70
11	234	4.09	0.64	234	3.76	0.67	234	4.19	0.62	234	3.79	0.68