You can enter phonics data for the last academic year by going to; Admin> Students> Statutory Assessments.
Select End of Key Stage 1 from the drop down and under Assessment Components choose the two phonics screening checks (in green).
Enter the year of result and the curriculum year the student is currently in. When you click Choose the list of students who took their Phonics test that year will come up with their results. Enter the student results here, then click Save at the bottom of the page.