Questions about existence sit at the meeting point of science and philosophy, which makes a book like The Enigmatic Expanse: Existence a promising anchor for cross-curricular work. A science teacher and an English teacher can assign related writing tasks that approach the same ideas from different directions. Students gain a fuller picture when they see that the big questions do not belong to a single subject. The grading challenge is making sure each discipline's standards are honored.

Cross-curricular writing can fail when it becomes a loose collaboration with unclear expectations. If students do not know whether they will be graded on scientific accuracy, argument quality, or both, they tend to guess. Teachers should agree beforehand on the purpose of the assignment and the criteria each will apply. A shared one-page assignment sheet keeps everyone aligned.

A good starting point is to identify a question that both subjects can speak to, such as how humans decide what counts as real or what it means to observe something. The English class can focus on argument and use of the book as a source, while the science class contributes evidence or concepts relevant to the same question. Students then write a single piece that draws on both. This integration is where the learning happens.

Decide who grades what

One approach is a split rubric, with the English teacher scoring argument, organization, and use of the book, and the science teacher scoring the accuracy and appropriate use of scientific ideas. Another is a single shared score based on a combined rubric. Either can work, but the decision should be made before students begin. Clarity about who evaluates which criteria prevents conflicting feedback.

• Agree on a shared central question that both subjects can address
• Decide which criteria each teacher will score and publish them to students
• Require accurate use of scientific ideas without demanding technical expertise
• Ask students to connect at least one idea from the book to a concept from science
• Hold a short joint calibration session using two or three sample essays

Protect accuracy without stifling inquiry

Students sometimes make confident but incorrect claims when they write about scientific ideas in a humanities context. Teachers can address this by requiring that any scientific claim be backed by a named source or class material. A short accuracy check, done by the science teacher, helps keep the essays grounded. At the same time, the goal is not to turn every reflective essay into a lab report.

It helps to teach students the difference between using science as evidence and using it as decoration. A scientific term dropped into a sentence to sound impressive does little for an argument. Feedback should ask how the concept supports the specific claim being made. This standard encourages careful use rather than name-dropping.

Make feedback consistent across two classrooms

When two teachers give feedback on the same assignment, students can receive mixed messages. Using shared rubric language and sample comments reduces that risk. Tools that apply a common rubric to every essay and draft comments in a consistent voice can also help, particularly when the combined class size is large. Teachers still review and add subject-specific notes.

Timing deserves attention too. If one teacher returns essays in three days and the other in three weeks, the shared project loses momentum. Agreeing on a return date, and building the grading plan around it, keeps students engaged with the work. Faster feedback tools can make that schedule more realistic.

Evaluate the learning, not just the product

A cross-curricular unit is worth measuring for how it changes student thinking, not only for the quality of the final essay. A brief reflection at the end, in which students describe how each subject shaped their view of the question, provides useful evidence. Teachers can read these reflections for signs that students see connections between disciplines. Those insights often justify the extra coordination.

Sharing results with colleagues and administrators can help sustain these efforts. A simple summary of the assignment, the rubric, and sample student work shows what interdisciplinary teaching looks like in practice. Other teachers may adopt the model for different books and topics. Over time, a single shared assignment can grow into a school-wide habit of connecting subjects.