DAVISON High School for Girls was crowned South Downs Best Company, and Seaford College won Best Company for Arun and Chichester at the Young Enterprise area finals.
The teams will now represent the county at the Company Programme final next month.
The students’ company from Davison, Lunaria, sold hand-made flower crowns.
The team from Seaford College, To Dye For, were selling tie-dye T-shirts and socks. They also sold a range of tie-dye kits.
The teams beat off stiff competition from six other teams to be the overall winners.
For the first time this year Young Enterprise was also able to award Best Company Team Programme to Oak Grove College in Worthing.
Its company produced a range of greetings cards using art work created by pupils in the school.
More than 14,500 young people aged 15 to 19 from across the country have set up and run a real business over the academic year as part of Company Programme.
Students have made all the decisions about their business, from deciding on the company name and product, to creating a business plan, managing their finances and selling their products.
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