Teaching a Comparative Memoir Unit: The Glass Castle and Educated

Published on September 23rd, 2026 by the GraideMind team

The Glass Castle and Educated share enough surface similarities, unconventional childhoods, absent formal schooling, complicated parents, and eventual escape into a different kind of life, that pairing them invites lazy, checklist-style comparison essays if the assignment is not designed carefully. Both memoirs deal with families that reject mainstream institutions, but they do so for different reasons and with different consequences, which is exactly the kind of distinction a well-built comparative essay should surface. Teachers considering this pairing need to design prompts that require students to go past the obvious parallel and into the more specific differences in how each author frames family loyalty, education, and self-determination. Without that specificity, students tend to produce two mini-summaries stapled together rather than a true comparative argument.

A stack of exam papers waiting to be graded

A strong comparative prompt might ask students to analyze how each author uses a specific narrative technique, such as retrospective narration or selective memory, to shape the reader's understanding of a parent's love despite that parent's harmful choices. This requires students to track a similar device across two different texts rather than simply noting that both books feature difficult parents, which is a much more demanding analytical task. It also naturally produces essays with a genuine argumentative core, since students have to make a claim about how the two authors' choices differ, not just that both memoirs exist in the same general genre. This kind of prompt rewards students who did close reading in both texts rather than students who skimmed for plot similarities.

Sequencing matters considerably in this unit, since students need a solid independent understanding of each text before they can meaningfully compare them. Many teachers find it effective to complete close analytical work on The Glass Castle first, building the vocabulary and close-reading habits the comparison will require, before introducing Educated as the second text. This staggered approach also gives teachers a chance to assess understanding of each memoir separately through shorter assignments before the higher-stakes comparative essay, catching gaps in either text's comprehension early. Rushing both texts to reach the comparative essay faster usually produces weaker essays overall, since students end up under-read on at least one of the two memoirs.

Designing the Comparative Rubric

A comparative essay rubric needs a criterion specifically addressing genuine comparison, not just accurate treatment of each text in isolation, since it is entirely possible for a student to write two accurate but disconnected sections. This criterion should reward transitions and topic sentences that explicitly connect the two texts around a shared analytical point, rather than essays organized as "first I will discuss Glass Castle, then I will discuss Educated." That organizational pattern, common in early attempts at comparative writing, produces two summaries rather than one argument, and the rubric should be explicit that this structure caps the possible score regardless of the quality of each individual section. Naming this expectation clearly before students draft saves considerable regrading and revision time later.

  • Require a thesis that makes a claim about how the two authors differ, not just that they are similar
  • Reward integrated paragraph structure over a "first text, then second text" organization
  • Require evidence from both memoirs in a majority of body paragraphs
  • Assess depth of analysis on both texts equally, not just the more recently read one
  • Include a criterion for synthesis in the conclusion that extends beyond both individual texts

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A comparative essay that treats each memoir in a separate, sealed section has not actually made a comparison yet.

Common Pitfalls in Student Comparisons

The most frequent problem in these essays is uneven depth, where a student writes with real insight about whichever memoir they read more recently or found more personally engaging, while treating the other text more superficially. This imbalance is easy to spot in grading but harder to prevent, and it usually points back to insufficient scaffolding on one of the two texts earlier in the unit. A second common issue is students overstating the similarity between the two families' situations, glossing over the real differences in the Westover family's isolation and religious extremism versus the Walls family's more chaotic, unstructured poverty. Encouraging students to name at least one meaningful difference explicitly, even within an essay focused on similarities, tends to produce more accurate and more sophisticated analysis.

A third pitfall involves students defaulting to a simple "both memoirs show resilience" conclusion that could apply to nearly any survival narrative, missing the more specific and interesting comparative claims available in these particular texts. Pushing students toward specificity, such as comparing how each author's relationship to formal education becomes a marker of escape in different ways, produces essays that could only have been written about these two books. This specificity is ultimately what distinguishes a genuinely comparative essay from a generic one, and it is worth modeling directly with strong and weak thesis examples before students begin drafting their own.

Grading Efficiently Across Two Texts

Grading comparative essays takes longer than grading single-text essays by default, since the grader needs working familiarity with both memoirs to evaluate the accuracy and depth of the comparison being made. Keeping a running reference sheet of key passages, characters, and events from both books, organized by the likely comparative angles students will take, speeds up this process considerably. This reference sheet lets a grader quickly verify a student's claim about a specific scene without having to flip back through either full memoir mid-grading session. Departments that teach this pairing regularly often build and refine this reference sheet collaboratively over successive years.

Rubric-aligned grading tools can also help manage the added complexity of a two-text comparative essay, particularly when a teacher is grading a large stack under time pressure. The core requirement remains the same as any strong grading process, a clear rubric with criteria specific enough to distinguish genuine comparison from parallel summary, applied consistently across every essay in the stack. Teachers who invest in building this comparative unit well find that it pays off in stronger analytical writing skills that carry over into other assignments throughout the year. The pairing of these two memoirs, done carefully, teaches a mode of thinking that goes well beyond either individual book.

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