BIO 311DIntroductory Biology II
3.20 average GPA and 33.7% A grades across 31,272 reported letter grades. Compare reported semesters and official course sources.
- Average GPA / 4.00
- 3.20
- A grades · excludes A−
- 33.7%
- Letter grades reported
- 31,272
Summer 2011 — Summer 2026 · 46 reported semesters
Source: UT Austin Office of Institutional Reporting; updated .
The grade distribution
Read the exact grade counts
| Grade | Count | Share |
|---|---|---|
| A | 10,544 | 33.7% |
| A− | 4,072 | 13.0% |
| B+ | 3,374 | 10.8% |
| B | 5,307 | 17.0% |
| B− | 1,885 | 6.0% |
| C+ | 1,589 | 5.1% |
| C | 2,518 | 8.1% |
| C− | 684 | 2.2% |
| D+ | 249 | 0.8% |
| D | 529 | 1.7% |
| D− | 96 | 0.3% |
| F | 425 | 1.4% |
A shares count A only. A− is separate. GPA uses reported letter grades; 1,559 non-GPA outcomes are excluded.
What the reported grades show
BIO 311D (Introductory Biology II) has 31,272 reported letter grades across 46 semesters in this export, from Summer 2011 to Summer 2026. Combining those grades gives a mean of 3.20 on UT’s four-point scale. This is a count-weighted result: every reported letter grade contributes once to the course total, so larger reported groups have more influence than smaller groups. It is not an average of rounded semester GPAs.
In BIO 311D, 10,544 of the 31,272 letter grades were A, or 33.7%. Another 4,072 were A−. Combining A and A− produces an A-range share of 46.7%, a different measure from the A-only figure at the top of the page. The distribution also records 425 F grades. The combined D+, D, D− and F share is 4.2%. These figures help show the shape of the historical outcomes alongside the overall mean.
The latest reported semester for BIO 311D is Summer 2026. Its 170 letter grades yield 3.40 average grade points and 48.2% A grades. Across semesters with letter grades, the reported mean ranges from 2.63 in Fall 2015 to 3.78 in Summer 2020. The largest reported letter-grade count is in Spring 2026, with 1,707 letter grades.
Within the BIO source group, the pooled undergraduate average is 3.20 across 262,082 letter grades and 122 courses. BIO 311D matches that pooled mean after rounding to two decimals. This comparison combines different courses and student groups; it does not adjust for prerequisites, course level or selection into a class. Use the department hub to compare the underlying grade counts before interpreting that difference.
BIO 311D appears in Spring, Fall, Summer in the reported history. Spring accounts for the largest number of its reported letter grades (21,381). These are observed reporting seasons, not a promise about the next schedule. Check the catalog prerequisites and the syllabus for the exact section before registration; a past grade distribution does not describe an upcoming instructor’s assignments, attendance rules or assessment weights.
Recent semesters
| Semester | Average GPA | % A | Letter grades |
|---|---|---|---|
| Summer 2026 | 3.40 | 48.2% | 170 |
| Spring 2026 | 3.39 | 38.8% | 1,707 |
| Fall 2025 | 3.17 | 30.8% | 454 |
| Summer 2025 | 3.31 | 43.7% | 167 |
| Spring 2025 | 3.53 | 50.8% | 1,518 |
| Fall 2024 | 3.30 | 32.7% | 361 |
| Summer 2024 | 3.18 | 27.6% | 152 |
| Spring 2024 | 3.39 | 41.1% | 1,627 |
| Fall 2023 | 3.11 | 26.0% | 512 |
| Summer 2023 | 3.48 | 33.9% | 124 |
| Spring 2023 | 3.48 | 46.0% | 1,652 |
| Fall 2022 | 3.24 | 34.4% | 471 |
| Summer 2022 | 3.49 | 35.7% | 140 |
| Spring 2022 | 3.47 | 47.3% | 1,622 |
| Fall 2021 | 3.28 | 34.6% | 462 |
| Summer 2021 | 3.60 | 50.6% | 77 |
| Spring 2021 | 3.74 | 67.7% | 1,410 |
| Fall 2020 | 3.49 | 58.5% | 492 |
| Summer 2020 | 3.78 | 73.3% | 101 |
| Spring 2020 | 3.77 | 66.9% | 1,433 |
| Fall 2019 | 2.75 | 11.3% | 573 |
| Summer 2019 | 3.15 | 36.8% | 68 |
| Spring 2019 | 3.21 | 26.5% | 1,564 |
| Fall 2018 | 2.67 | 11.4% | 673 |
| Summer 2018 | 3.03 | 35.6% | 101 |
| Spring 2018 | 3.07 | 19.6% | 1,528 |
| Fall 2017 | 2.79 | 13.4% | 670 |
| Summer 2017 | 3.16 | 46.0% | 100 |
| Spring 2017 | 3.08 | 23.1% | 1,362 |
| Fall 2016 | 2.86 | 17.4% | 608 |
| Summer 2016 | 2.89 | 26.5% | 83 |
| Spring 2016 | 3.09 | 25.8% | 1,293 |
| Fall 2015 | 2.63 | 10.8% | 490 |
| Summer 2015 | 2.78 | 29.8% | 84 |
| Spring 2015 | 3.10 | 31.5% | 1,008 |
| Fall 2014 | 2.75 | 20.2% | 595 |
| Summer 2014 | 2.88 | 30.1% | 103 |
| Spring 2014 | 2.99 | 22.2% | 1,187 |
| Fall 2013 | 2.80 | 20.5% | 584 |
| Summer 2013 | 2.80 | 19.0% | 137 |
| Spring 2013 | 2.93 | 19.8% | 1,331 |
| Fall 2012 | 2.92 | 24.0% | 559 |
| Summer 2012 | 2.72 | 20.7% | 116 |
| Spring 2012 | 2.97 | 20.1% | 1,139 |
| Fall 2011 | 2.82 | 22.7% | 542 |
| Summer 2011 | 2.94 | 31.1% | 122 |
Historical offering pattern
| Season | Reported semesters | Most recent |
|---|---|---|
| Summer | 16 | Summer 2026 |
| Fall | 15 | Fall 2025 |
| Spring | 15 | Spring 2026 |
These seasons are observed in the grade history. Confirm the next offering in the official Course Schedule; missing grades do not establish that a course was not offered.
Catalog and prerequisites
Introduction to mechanisms of inheritance, evolution, physiology, and species interactions. Biology 301L and 311D may not both be counted. Biology 301M and 311D may not both be counted. Three lecture hours and one discussion hour a week for one semester.
Prerequisites
Biology 311C with a grade of at least C- and credit or registration for Biology 206L.
Catalog credit value: 3 Hours.
Read the official BIO 311D catalog entry
Core designations in the catalog export: Natural Science and Technology, Part I.
Use UT’s current core list and the official course schedule for your actual semester, then confirm your degree plan with UT. The 2025–26 Core 010 guidance has term-specific rules and does not establish Fall 2026 eligibility from an old Writing Flag. Policy sources checked October 27, 2026.
Syllabi for the actual section
No section-specific syllabus link for BIO 311D is present in this export.
Search UT’s public HB 2504 syllabus and CV archive for the section you plan to take. Older syllabi describe their own semester, not the next offering.
BIO 311D questions
What is the average GPA in BIO 311D?
The reported mean is 3.20 from 31,272 letter grades. Each grade is weighted equally, excluding non-GPA symbols.
What percentage of BIO 311D grades are A?
A grades account for 33.7% of reported letter grades. A− grades are separate; the combined A/A− share is 46.7%.
When was BIO 311D most recently reported?
The latest semester in the export is Summer 2026, with 170 letter grades. A missing later semester is not evidence that the course stopped being offered.
Do the BIO 311D grades measure teaching quality?
No. Grade distributions describe reported outcomes for different sections and student groups. They do not measure teaching quality, workload, learning or your likely individual grade.