<span class="co">#&gt; $ normexam         &lt;dbl&gt; 0.2613242, 0.1340672, -1.7238820, 0.9675862, 0.544341…</span>
<span class="co">#&gt; $ standLRT         &lt;dbl&gt; 0.6190592, 0.2058022, -1.3645760, 0.2058022, 0.371105…</span>
<span class="co">#&gt; $ school           &lt;fct&gt; 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,…</span>
<span class="co">#&gt; $ .resid           &lt;dbl&gt; -0.46358741, -0.35802733, -1.33127074, 0.47549167, -0…</span>
<span class="co">#&gt; $ .fitted        