Complex sentence: Founded in 1947, it was made the only provincially accredited school in Shenzhen in 1983; in November, 1993, it became one of the first Level One schools in Guangdong Province.
Split into simpler sentences: Founded in 1947, it was made the only provincially accredited school in Shenzhen in 1983. In November, 1993, it became one of the first Level One schools in Guangdong Province.