Do primary and middle school students in Jiangsu have to take part in the experimental knowledge contest?

No need. Jiangsu primary and secondary school students do not need to participate in the experimental knowledge contest; Participating in the Jiangsu Experimental Competition for Primary and Secondary Schools does not necessarily affect children's primary school graduation, but participating in this competition can improve children's scientific experimental ability, enhance their scientific interest and exercise their teamwork ability. Jiangsu Province, referred to as "Su" for short, is a provincial administrative region of People's Republic of China (PRC), with Nanjing as its capital and located in the Yangtze River Delta.