Every assessment since Grade 8, as a percentage, against the school's own 9-point scale. Formative project marks are recorded at the bottom but kept out of the graph — they sit at 80–100 across the board and would flatten every line.
The G8 mid and G8 end columns are the official report-card percentages. They're a weighted blend that includes the project mark, so they aren't the mean of the assessments beside them — which is why they're here and not on the graph.