diff --git a/module/picker/schema.py b/module/picker/schema.py
new file mode 100644
index 0000000..087befc
--- /dev/null
+++ b/module/picker/schema.py
@@ -0,0 +1,129 @@
+from typing import Optional
+
+from openpyxl.reader.excel import load_workbook
+from openpyxl.workbook.workbook import Workbook
+from openpyxl.worksheet.worksheet import Worksheet
+
+
+class PickerStudent:
+    total_time: int = 0
+
+    def __init__(self, name: str, position: int, scores: list[int]):
+        self._name = name
+        self._position = position
+        self._scores = scores
+        self._modify = False
+        self._scores = []
+        self._scores.extend(scores)
+        self._scores_pointer = -1
+
+        self.init_score()
+
+    def init_score(self):
+        self._scores += [0] * (self.total_time - len(self._scores))
+
+        for idx, val in enumerate(self._scores):
+            if val is None:
+                self._scores[idx] = 0
+            if self._scores[idx] == 0:
+                self._scores_pointer = idx
+                break
+
+    def append_score(self, score: int) -> int:
+        if self._scores_pointer > self.total_time or self._scores_pointer < 0:
+            raise IndexError
+        self._scores[self._scores_pointer] = score
+        self._scores_pointer += 1
+        self.modified()
+        return self._scores_pointer - 1
+
+    def change_score(self, new_score: int, index: int):
+        if index < 0 or index > self.total_time:
+            raise IndexError
+        self._scores[index] = new_score
+        self.modified()
+
+    @classmethod
+    def set_total_time(cls, total_time: int):
+        cls.total_time = total_time
+
+    @property
+    def position(self) -> int:
+        return self._position
+
+    @property
+    def scores(self) -> list[int]:
+        return self._scores
+
+    @property
+    def modify(self) -> bool:
+        return self._modify
+
+    def saved(self):
+        self._modify = False
+
+    def modified(self):
+        self._modify = True
+
+    def __str__(self):
+        return f"PickerStudent {self._name} at {self.position}, with scores: {','.join(str(x) for x in self._scores if x)}"
+
+    def __repr__(self):
+        return self.__str__()
+
+
+class PickerExcel:
+    wb: Optional[Workbook]
+    ws: Optional[Worksheet]
+    path: str = ''
+    max_time_position = 'L1'
+
+    def __init__(self, path: str):
+        self.open(path)
+
+    @classmethod
+    def open(cls, path: str):
+        cls.path = path
+        cls.wb = load_workbook(path)
+        cls.ws = cls.wb.active
+        PickerStudent.set_total_time(cls.ws[cls.max_time_position].value)
+
+    @classmethod
+    def read_student(cls, path: Optional[str] = None) -> list[PickerStudent]:
+        if path:
+            cls.open(path)
+
+        if cls.wb and cls.ws:
+            ret = []
+            for row in cls.ws.iter_rows(min_row=4, max_col=4 + cls.ws[cls.max_time_position].value, values_only=True):
+                if (name := row[2]) is None:
+                    break
+                ret.append(PickerStudent(name, int(row[0]) + 3, row[4:]))
+            return ret
+        else:
+            raise Exception('No Workbook or Worksheet')
+
+    @classmethod
+    def write_back(cls, student: PickerStudent):
+        start_col = 5  # E列
+        row = student.position
+
+        for i, val in enumerate(student.scores):
+            cls.ws.cell(row=row, column=start_col + i, value=val if val != 0 else '')
+
+        student.saved()
+
+    @classmethod
+    def write_all(cls, students: list[PickerStudent]):
+        for student in students:
+            if student.modify:
+                cls.write_back(student)
+
+    @classmethod
+    def save(cls):
+        if cls.ws:
+            cls.wb.save(cls.path)
+
+
+if __name__ == '__main__':
+    ...