[Retracted] Preservice Training Strategies and Guarantee Mechanisms for Primary and Secondary School Teachers in the Development of Smart Cities by the Internet of Things

Table 1

Improvement levels of students’ academic development in different grades and subjects.

Academic development		Teaching ability (%)			Improvement of students’ academic performance (%)
		Low	Medium	High	Low	Medium	High
School types	State-owned schools	8.02	27.64	64.35	7.25	26.07	66.68
	International schools	7.8	35.22	56.97	6.6	29.07	64.33
	Private schools	11.25	37	51.75	11.8	33.8	54.4
Subjects	Chinese	4.94	4.94	69.44	2.72	26.17	71.11
	Math	9.25	9.25	62.04	7.47	27.12	65.41
	English	9.1	29.1	61.79	13.08	35.65	41.12