class="p">,</span><span class="s2">&quot;grade&quot;</span><span class="p">,</span><span class="s2">&quot;ay&quot;</span><span class="p">,</span><span class="s2">&quot;category&quot;</span><span class="p">,</span><span class="s2">&quot;mean_scale_score_math&quot;</span><span class="p">,</span> <span class="s2">&quot;mean_scale_score_ela&quot;</span><span class="p">,</span> <span class="s2">&quot;test_delta&quot;</span><span class="p">]]</span><span class="o">.</span><span class="n">head</span><span class="p