Boletim: Média com Peso

Report-card weighted average: formula and example

Brazilian report cards usually blend several bimesters or trimesters, or a handful of assessments within one term, through a weighted formula: M = Σ(gradeᵢ · weightᵢ) / Σ weightᵢ. Inside a single term, a typical split is test = weight 7, project = weight 2, participation = weight 1. Example: test 8.0 × 7, project 9.0 × 2, participation 10 × 1 → (56 + 18 + 10) / 10 = 8.4. Across the year, a school might hand weight 2 to the final bimester to reward students who improve, leaving the first three at weight 1.

Applications

Private and public K-12 schools that follow the BNCC run bimestral or trimestral weighted averages, frequently giving the final term extra weight. SisProva and similar state assessment systems weight internal grades against standardized scores. EJA (youth and adult education) and supletivo programs compress those term weights because the calendar is shorter. Final exam ("recuperação") averages tend to split 50/50 between the term average and the makeup test.

FAQ

Where do I find the weights? Check the school's "regimento" or the term plan handed out at the start of the year. Schools are required to publish how grades are put together.

Can weights be decimals? Sure. Values like 0.5, 1.5 and 2.5 are fine. Since the formula divides by the sum of the weights, any positive scale works.

What is the passing average? Most Brazilian schools set the minimum at 6.0 or 7.0. This tool only computes the weighted result; the threshold to pass is up to each school.