e</th>
      <th>category</th>
      <th>number_tested_ela</th>
      <th>mean_scale_score_ela</th>
      <th>level_1_n_ela</th>
      <th>level_1_pct_ela</th>
      <th>level_2_n_ela</th>
      <th>level_2_pct_ela</th>
      <th>level_3_n_ela</th>
      <th>...</th>
      <th>level_2_n_math</th>
      <th>level_2_pct_math</th>
      <th>level_3_n_math</th>
      <th>level_3_pct_math</th>
      <th>level_4_n_math</th>
      <th>level_4_pct_math</th>
      <th>level_3_4_n_math</th>
      <th>level_3_4_pct_ma