How many years did Juanqiao Middle School in Chizhou City, Anhui Province graduate from 20 17?

According to a question: Juanqiao Middle School in Chizhou City, Anhui Province graduated from 20 17 of 2020.

Chizhou, referred to as Qiupu for short, is a prefecture-level city under the jurisdiction of Anhui Province and the central city of the Yangtze River Delta. It is located in the south of Anhui Province, on the south bank of the lower reaches of the Yangtze River. The terrain of the city is high in the southeast and low in the northwest, and it is distributed in a ladder shape from south to north. It has a warm and humid subtropical monsoon climate with four distinct seasons and abundant rainfall.