diff --git a/exams.js b/exams.js
deleted file mode 100644
index 870ad36..0000000
--- a/exams.js
+++ /dev/null
@@ -1,111 +0,0 @@
-const Exam = require('../models/Exam');
-
-// 获取所有考试
-exports.getExams = async (req, res, next) => {
-    try {
-        const exams = await Exam.find({ isActive: true })
-            .select('-questions.answer') // 不返回答案
-            .populate('createdBy', 'username');
-
-        res.json(exams);
-    } catch (err) {
-        next(err);
-    }
-};
-
-// 获取单个考试详情
-exports.getExam = async (req, res, next) => {
-    try {
-        const exam = await Exam.findById(req.params.id)
-            .select('-questions.answer') // 不返回答案
-            .populate('createdBy', 'username');
-
-        if (!exam) {
-            return res.status(404).json({ message: 'Exam not found' });
-        }
-
-        res.json(exam);
-    } catch (err) {
-        next(err);
-    }
-};
-
-// 创建新考试 (教师/管理员)
-exports.createExam = async (req, res, next) => {
-    try {
-        const { title, description, duration, questions } = req.body;
-
-        const exam = new Exam({
-            title,
-            description,
-            duration,
-            questions,
-            createdBy: req.user.id
-        });
-
-        await exam.save();
-
-        res.status(201).json(exam);
-    } catch (err) {
-        next(err);
-    }
-};
-
-// 验证考试答案
-exports.validateAnswers = async (req, res, next) => {
-    try {
-        const { answers } = req.body;
-
-        // 获取考试(包含正确答案)
-        const exam = await Exam.findById(req.params.id);
-        if (!exam) {
-            return res.status(404).json({ message: 'Exam not found' });
-        }
-
-        // 计算分数
-        let totalScore = 0;
-        const results = exam.questions.map(question => {
-            const userAnswer = answers[question._id];
-            let isCorrect = false;
-            let score = 0;
-
-            if (question.type === 'text') {
-                // 简答题默认给一半分
-                if (userAnswer && userAnswer.trim().length > 0) {
-                    isCorrect = true;
-                    score = question.score / 2;
-                }
-            } else if (Array.isArray(question.answer)) {
-                // 多选题
-                const correctAnswers = [...question.answer].sort().toString();
-                const userAns = [...userAnswer].sort().toString();
-                isCorrect = correctAnswers === userAns;
-                score = isCorrect ? question.score : 0;
-            } else {
-                // 单选题
-                isCorrect = userAnswer === question.answer;
-                score = isCorrect ? question.score : 0;
-            }
-
-            totalScore += score;
-
-            return {
-                questionId: question._id,
-                question: question.question,
-                userAnswer,
-                correctAnswer: question.answer,
-                isCorrect,
-                score
-            };
-        });
-
-        res.json({
-            examId: exam._id,
-            totalScore,
-            maxScore: exam.questions.reduce((sum, q) => sum + q.score, 0),
-            results
-        });
-    } catch (err) {
-        next(err);
-    }
-};
\ No newline at end of file