diff --git a/nextjs/src/models/local/semesterTransferUtils.ts b/nextjs/src/models/local/semesterTransferUtils.ts
new file mode 100644
index 0000000..74e1585
--- /dev/null
+++ b/nextjs/src/models/local/semesterTransferUtils.ts
@@ -0,0 +1,98 @@
+import { LocalAssignment } from "./assignment/localAssignment";
+import { LocalQuiz } from "./quiz/localQuiz";
+import {
+  dateToMarkdownString,
+  getDateFromString,
+  getDateFromStringOrThrow,
+  getDateOnlyMarkdownString,
+} from "./timeUtils";
+
+export const prepAssignmentForNewSemester = (
+  assignment: LocalAssignment,
+  oldSemesterStartDate: string,
+  newSemesterStartDate: string
+): LocalAssignment => {
+  const descriptionWithoutGithubClassroom = replaceClassroomUrl(
+    assignment.description
+  );
+  return {
+    ...assignment,
+    description: descriptionWithoutGithubClassroom,
+    dueAt:
+      newDateOffset(
+        assignment.dueAt,
+        oldSemesterStartDate,
+        newSemesterStartDate
+      ) ?? assignment.dueAt,
+    lockAt: newDateOffset(
+      assignment.lockAt,
+      oldSemesterStartDate,
+      newSemesterStartDate
+    ),
+  };
+};
+
+
+export const prepQuizForNewSemester = (
+  quiz: LocalQuiz,
+  oldSemesterStartDate: string,
+  newSemesterStartDate: string
+): LocalQuiz => {
+  const descriptionWithoutGithubClassroom = replaceClassroomUrl(
+    quiz.description
+  );
+  return {
+    ...quiz,
+    description: descriptionWithoutGithubClassroom,
+    dueAt:
+      newDateOffset(
+        quiz.dueAt,
+        oldSemesterStartDate,
+        newSemesterStartDate
+      ) ?? quiz.dueAt,
+    lockAt: newDateOffset(
+      quiz.lockAt,
+      oldSemesterStartDate,
+      newSemesterStartDate
+    ),
+  };
+};
+
+
+
+const replaceClassroomUrl = (value: string) => {
+  const classroomPattern =
+    /https:\/\/classroom\.github\.com\/[a-zA-Z0-9\/._-]+/g;
+  const withoutGithubClassroom = value.replace(
+    classroomPattern,
+    "insert_github_classroom_url"
+  );
+  return withoutGithubClassroom;
+};
+
+const newDateOffset = (
+  dateString: string | undefined,
+  oldSemesterStartDate: string,
+  newSemesterStartDate: string
+) => {
+  if (!dateString) return dateString;
+  const oldStart = getDateFromStringOrThrow(
+    oldSemesterStartDate,
+    "semester start date in new semester offset"
+  );
+  const newStart = getDateFromStringOrThrow(
+    newSemesterStartDate,
+    "new semester start date in new semester offset"
+  );
+  const date = getDateFromStringOrThrow(
+    dateString,
+    "date in new semester offset"
+  );
+  const offset = date.getTime() - oldStart.getTime();
+
+  const newUnixTime = offset + newStart.getTime();
+
+  const newDate = new Date(newUnixTime);
+
+  return dateToMarkdownString(newDate);
+};
diff --git a/nextjs/src/models/local/tests/testSemesterImport.test.ts b/nextjs/src/models/local/tests/testSemesterImport.test.ts
new file mode 100644
index 0000000..ff76a55
--- /dev/null
+++ b/nextjs/src/models/local/tests/testSemesterImport.test.ts
@@ -0,0 +1,173 @@
+import { describe, it, expect } from "vitest";
+import { LocalAssignment } from "../assignment/localAssignment";
+import { prepAssignmentForNewSemester, prepQuizForNewSemester } from "../semesterTransferUtils";
+import { LocalQuiz } from "../quiz/localQuiz";
+
+describe("can take an assignment and template it for a new semester", () => {
+  it("can sanitize assignment github classroom repo url", () => {
+    const assignment: LocalAssignment = {
+      name: "test assignment",
+      description: `
+## test description 
+
+[GitHub Classroom Assignment](https://classroom.github.com/a/y_eOxTfL)
+
+other stuff below`,
+      dueAt: "08/21/2023 23:59:00",
+      lockAt: "08/21/2023 23:59:00",
+      submissionTypes: [],
+      localAssignmentGroupName: "Final Project",
+      rubric: [],
+      allowedFileUploadExtensions: [],
+    };
+    const oldSemesterStartDate = "08/26/2023 23:59:00";
+    const newSemesterStartDate = "01/08/2024 23:59:00";
+
+    const sanitizedAssignment = prepAssignmentForNewSemester(
+      assignment,
+      oldSemesterStartDate,
+      newSemesterStartDate
+    );
+
+    expect(sanitizedAssignment.description).toEqual(`
+## test description 
+
+[GitHub Classroom Assignment](insert_github_classroom_url)
+
+other stuff below`);
+  });
+
+  it("can sanitize assignment github classroom repo url 2", () => {
+    const assignment: LocalAssignment = {
+      name: "test assignment",
+      description: `
+<https://classroom.github.com/a/y_eOxTfL>
+other stuff below`,
+      dueAt: "08/21/2023 23:59:00",
+      lockAt: "08/21/2023 23:59:00",
+      submissionTypes: [],
+      localAssignmentGroupName: "Final Project",
+      rubric: [],
+      allowedFileUploadExtensions: [],
+    };
+    const oldSemesterStartDate = "08/26/2023 23:59:00";
+    const newSemesterStartDate = "01/08/2024 23:59:00";
+
+    const sanitizedAssignment = prepAssignmentForNewSemester(
+      assignment,
+      oldSemesterStartDate,
+      newSemesterStartDate
+    );
+
+    expect(sanitizedAssignment.description).toEqual(`
+<insert_github_classroom_url>
+other stuff below`);
+  });
+
+  it("can sanitize assignment github classroom repo url 3", () => {
+    const assignment: LocalAssignment = {
+      name: "test assignment",
+      description: `https://classroom.github.com/a/y_eOxTfL other things`,
+      dueAt: "08/21/2023 23:59:00",
+      lockAt: "08/21/2023 23:59:00",
+      submissionTypes: [],
+      localAssignmentGroupName: "Final Project",
+      rubric: [],
+      allowedFileUploadExtensions: [],
+    };
+    const oldSemesterStartDate = "08/26/2023 23:59:00";
+    const newSemesterStartDate = "01/08/2024 23:59:00";
+
+    const sanitizedAssignment = prepAssignmentForNewSemester(
+      assignment,
+      oldSemesterStartDate,
+      newSemesterStartDate
+    );
+
+    expect(sanitizedAssignment.description).toEqual(
+      `insert_github_classroom_url other things`
+    );
+  });
+});
+
+describe("can offset date based on new semester start", () => {
+  it("assignment with new semester start", () => {
+    const assignment: LocalAssignment = {
+      name: "test assignment",
+      description: `https://classroom.github.com/a/y_eOxTfL other things`,
+      dueAt: "08/29/2023 23:59:00",
+      lockAt: "08/29/2023 23:59:00",
+      submissionTypes: [],
+      localAssignmentGroupName: "Final Project",
+      rubric: [],
+      allowedFileUploadExtensions: [],
+    };
+
+    const oldSemesterStartDate = "08/26/2023 23:59:00";
+    const newSemesterStartDate = "01/08/2024 23:59:00";
+
+    const sanitizedAssignment = prepAssignmentForNewSemester(
+      assignment,
+      oldSemesterStartDate,
+      newSemesterStartDate
+    );
+
+    expect(sanitizedAssignment.dueAt).toEqual("01/11/2024 23:59:00");
+    expect(sanitizedAssignment.lockAt).toEqual("01/11/2024 23:59:00");
+  });
+  it("assignment with new semester start, no lock date", () => {
+    const assignment: LocalAssignment = {
+      name: "test assignment",
+      description: `https://classroom.github.com/a/y_eOxTfL other things`,
+      dueAt: "08/29/2023 23:59:00",
+      lockAt: undefined,
+      submissionTypes: [],
+      localAssignmentGroupName: "Final Project",
+      rubric: [],
+      allowedFileUploadExtensions: [],
+    };
+
+    const oldSemesterStartDate = "08/26/2023 23:59:00";
+    const newSemesterStartDate = "01/08/2024 23:59:00";
+
+    const sanitizedAssignment = prepAssignmentForNewSemester(
+      assignment,
+      oldSemesterStartDate,
+      newSemesterStartDate
+    );
+
+    expect(sanitizedAssignment.dueAt).toEqual("01/11/2024 23:59:00");
+    expect(sanitizedAssignment.lockAt).toEqual(undefined);
+  });
+});
+
+describe("can prep quizzes", () => {
+  it("assignment with new semester start, no lock date", () => {
+    const quiz: LocalQuiz = {
+      name: "Test Quiz",
+      description: `
+# quiz description
+`,
+      dueAt: "08/29/2023 23:59:00",
+      lockAt: "08/30/2023 23:59:00",
+      shuffleAnswers: true,
+      oneQuestionAtATime: false,
+      localAssignmentGroupName: "someId",
+      allowedAttempts: -1,
+      showCorrectAnswers: false,
+      questions: [],
+    };
+
+    const oldSemesterStartDate = "08/26/2023 23:59:00";
+    const newSemesterStartDate = "01/08/2024 23:59:00";
+
+    const sanitizedQuiz = prepQuizForNewSemester(
+      quiz,
+      oldSemesterStartDate,
+      newSemesterStartDate
+    );
+
+    expect(sanitizedQuiz.dueAt).toEqual("01/11/2024 23:59:00");
+    expect(sanitizedQuiz.lockAt).toEqual("01/12/2024 23:59:00");
+  });
+});