实验成绩计算

src/Jiaowu.Api/Domain/Academic/ExperimentGradeEntities.cs

@@ -51,6 +51,22 @@ public sealed class ExperimentGradeRecord : EntityBase
     public ICollection<ExperimentGradeItemScore> ItemScores { get; set; } = [];
 }
 
+/// <summary>
+/// A student's persisted experiment-part score for one teaching task.
+/// The score is the weighted average of every published experiment project.
+/// </summary>
+public sealed class ExperimentCourseGrade : EntityBase
+{
+    public Guid TeachingTaskId { get; set; }
+    public TeachingTask? TeachingTask { get; set; }
+    public Guid StudentId { get; set; }
+    public Student? Student { get; set; }
+    public decimal? WeightedAverageScore { get; set; }
+    public decimal TotalWeight { get; set; }
+    public int PublishedProjectCount { get; set; }
+    public DateTime RefreshedAt { get; set; }
+}
+
 public sealed class ExperimentGradeItemScore
 {
     public Guid ExperimentGradeRecordId { get; set; }