Academic Grades

Student grades are reported by semester. Semester grades are calculated based on weighted categories of formative and summative assessments and a possible final exam. Percentages assigned to each category may vary based on course, with the potential final exam counting for no more than 20% of the overall grade.

Grades are posted and updated regularly in the Skyward online gradebook. Parents and guardians receive email notifications at each progress report (3 times a semester). 

Beginning with the graduating class of 2019, District 155 students will no longer receive class rank, but will continue to have a GPA.

Grade Calculations

Common Grading Scale

In an effort to ensure consistency in grading practices, the following grading scale is used throughout all courses.



High Low
A+ 100 97.50
A 97.49 92.50
A- 92.49


B+ 89.99 87.50
B 87.49 82.50
B- 82.49 80.00
C+ 79.99 77.50
C 77.49 72.50
C- 72.49 70.00
D+ 69.99 67.50
D 67.49 62.50
D- 62.49 60.00
F 59.99 00.00


*A grade of "C" is the minimum achievement expected for college preparation.*

GPA Scale

The grade point average system is separated into three categories: General (G), Honors (H), and Advanced Placement® (AP®). To determine GPA, please use the following scale:







A+ 4.33 4.83 5.33
A 4.00 4.50 5.00
A- 3.67 4.17 4.67
B+ 3.33 3.83 4.33
B 3.00 3.50 4.00
B- 2.67 3.17 3.67
C+ 2.33 2.83 3.33
C 2.00 2.50 3.00
C- 1.67 2.17 2.67
D+ 1.33 1.83 2.33
D 1.00 1.50 2.00
D- 0.67 1.17 1.67
F 0.00 0.00 0.00

D155 Assessment Information

District 155 Assessment Information for the 2018-2019 school year. 

Assessment Purpose

Students Taking the Assessment

Testing Window/ Date
PSAT/NMSQT Gives students the opportunity to earn scholarships through the National Merit program. All 11th grade students as well as any freshmen and sophomores that sign up. October 10
PSAT 8/9 Provides a baseline measurement to evaluate student progress throughout their high school career and assesses college and career readiness. All 9th grade students. October 10 & April 9
PSAT 10 Measures academic progress of current 10th grade students and assesses college readiness. All 10th grade students. October 10 (Practice) April 9 (Official)
SAT Measures academic progress of current 11th grade students and assesses college readiness. All 11th grade students. April 9
Advanced Placement® Provides the opportunity for high school students to earn college credit. Evaluates college-readiness. All students enrolled in AP classes. May 6-May 17
Illinois Science Assessment Measures the mastery level of students pertaining to the Next Generation Science Standards All students enrolled in a Biology class during the 18/19 school year. March 1-April 30
DLM (Dynamic Learning Maps-Alternative Assessment) Measures student academic progress in math, ELA, and science. Students with significant cognitive disabilities March 13-May 8
ACCESS for English Language Learners Measures English proficiency through reading, writing, speaking, and listening. All ELL students January 16-February 19
AAPPL (ACTFL Assessment of Proficiency toward Proficiency in Languages) and/or STAMP4S Measures the foreign language reading, writing, speaking, and listening abilities of students. Students who elect to take the test in pursuit of the Seal of Biliteracy. Early April


Honor Roll Information

The school recognizes students for high academic achievement every quarter and semester. Specific grade point averages for those time periods must be reached in order to gain this recognition. There are two levels of honor that a student may achieve. 

                          Honor Roll                       Necessary GPA

                          Honors                              3.16 to 3.4

                          High Honors                     3.75 and above

Contact Us

Matt Timmerman
Director of Curriculum and Assessment 
Phone: (815) 455-8500 ext. 1043

Terri Reineck
Administrative Assistant 
Phone: (815) 455-8500 ext. 1031

  • Course selection guide
  • ISBE reporting
  • New teacher orientation communication 
  • Staff conference registration
  • Staff course approvals