Some schools start educating pupils partway through the 5-year period covered by Progress 8, which should be taken into account when comparing their results with schools that start at Key Stage 3.
The UTC will expect its first set of exam results for Post 16 in the summer of 2022. The first set of GCSE results will be published in the summer of 2023.
Here is a link to the school and college performance tables: Doncaster UTC - GOV.UK - Find and compare schools in England (compare-school-performance.service.gov.uk)
It's difficult to study many areas of STEM, like design and engineering in mainstream schools. UTCs excel in providing technical education.