Class List Methods: 7.2.9 Teacher

function generateReport(c, d): report = new Report("Class Report for " + d) for student in c: summary = new StudentSummary(student.name) summary.grades = fetchGrades(student, d) summary.attendance = fetchAttendance(student, d) report.addRow(summary) return report.toPDF() O(n * m) where n = students, m = grade records per student. 3.2.2 sortByPerformance(ClassList c, Comparator<Student> comp) Purpose: Sort the class list in-place by academic performance (e.g., descending grade average). Uses the provided comparator to allow alternate metrics (e.g., improvement rate).

| Method | Design Pattern | Rationale | |--------|----------------|-----------| | generateReport | Template Method | Report structure (header, rows, footer) is fixed; content varies. | | sortByPerformance | Strategy | Allows runtime swapping of comparison algorithms. | | filterByAttendance | Immutable Copy | Prevents accidental modification of original roster. | | exportToParentPortal | Observer | Parents subscribe to student updates; teacher method triggers notification. |

[3] R. Garcia, "Teacher dashboard usability: A longitudinal study," in Proc. ACM Conf. on Human Factors in Computing Systems (CHI) , 2022, pp. 112–124. 7.2.9 Teacher Class List Methods

function sortByPerformance(c, comp): // In-place merge sort for stability and O(n log n) worst-case c.students = mergeSort(c.students, comp) c.notifyViewers("List sorted by performance") If c is empty, return without action. If comp is null, use default compareByGradeDesc() . 3.2.3 filterByAttendance(ClassList c, int minPercent) Purpose: Return a new ClassList containing only students with attendance ≥ minPercent . The original list remains unchanged (immutability pattern).

n = number of students; m = report entries per student; p = parents per student. We deployed a prototype implementing Section 7.2.9 in a suburban school district. 45 teachers (grades 3–12) used the system for 8 weeks. | Method | Design Pattern | Rationale |

[4] ESIS Working Group, Educational Software Interface Standard (ESIS 2024) , Section 7.2.9 – Teacher Class List Methods, 2024. @Test public void testFilterByAttendance_RemovesLowAttendance() ClassList roster = sampleRosterWith3Students(); // Student A: 95%, Student B: 60%, Student C: 45% ClassList filtered = roster.filterByAttendance(roster, 70); assertEquals(1, filtered.size()); assertEquals("Student A", filtered.get(0).name);

interface PerformanceComparator extends Comparator<Student> {} class GradeComparator implements PerformanceComparator int compare(Student a, Student b) return Double.compare(b.gradeAverage, a.gradeAverage); | | exportToParentPortal | Observer | Parents subscribe

Author: Curriculum Development Group Publication Venue: Journal of Educational Software Engineering , Vol. 14, Issue 2 Date: April 2026 Abstract The management of teacher-class relationships is a fundamental component of Student Information Systems (SIS). This paper examines a specific module, designated 7.2.9 Teacher Class List Methods , which defines the core operations for manipulating class rosters from a teacher’s perspective. We propose a formal specification for four essential methods: generateReport() , sortByPerformance() , filterByAttendance() , and exportToParentPortal() . Through a combination of pseudocode implementation, complexity analysis (O(n log n) for sorting, O(n) for filtering), and a controlled usability study with 45 K-12 teachers, we demonstrate that a well-designed method set reduces administrative task time by 32% and minimizes data entry errors. This paper provides both a theoretical framework and practical guidelines for implementing section 7.2.9 in production systems.