[Retracted] Teaching Practice of Engineering Management Course for Engineering Education Certification under Background of Artificial Intelligence

Table 2

Sample grade distribution.

School	Grade	Freshman	Sophomore	Junior	Senior	Total samples
A	Number of samples	66	70	65	77	278
	Proportion (%)	23.74	25.18	23.38	27.70	100
B	Number of samples	73	70	64	75	282
	Proportion (%)	25.88	24.82	22.70	26.60	100