diff --git a/app/templates/classes.html b/app/templates/classes.html
index a05f758..92eee60 100644
--- a/app/templates/classes.html
+++ b/app/templates/classes.html
@@ -377,8 +377,12 @@ async function loadClassGoalOptions() {
     const select = document.getElementById('class-assign-goal-select');
     select.innerHTML = goals.map(g => `<option value="${g.id}">${escapeHtml(g.name)} [${g.level || '入门'} - ${g.category || '综合'}]</option>`).join('');
 
-    // 设置默认开始日期为今天
+    // 设置默认开始日期为今天，评估日期为90天后
     document.getElementById('class-assign-start-date').value = new Date().toISOString().split('T')[0];
+    document.getElementById('class-assign-assessment-days').value = '90';
+    const d = new Date();
+    d.setDate(d.getDate() + 90);
+    document.getElementById('class-assign-assessment-date').value = d.toISOString().split('T')[0];
 }
 
 // 评估日期联动