Current instructor

Xia Zhu Barker

What students say

Original student reviews · all captured dates

No unambiguous review-profile match is available.

Personal experiences, not a representative survey. Profile matching and captured coverage are shown in the source details.

Classes with Xia Zhu Barker

CHEM 699

Directed Study

1–6 credits

CHEM 699 is a directed study course involving an advanced mentored research project arranged with a faculty member.

Offering recorded · Fall 2026

Matt BowmanTehshik Yoon+103 more

historical GPA · grades

Spring 2022–Spring 2026
ENVIRST/SOILSCI 101

Forum on the Environment

1–2 credits

A forum course examining historical and contemporary human impacts on the biosphere and prospects for sustainable management.

Offering recorded · Fall 2026

Recent recorded grades — Spring 2024: 3.95 GPA, 96.9% A/AB (n=128 letter grades); Fall 2025: 3.92 GPA, 96.4% A/AB (n=165 letter grades).

Xia Zhu Barker

historical GPA · grades

Spring 2022–Spring 2026
F&WECOL/SOILSCI 451

Environmental Biogeochemistry

3 credits

Environmental Biogeochemistry explores global biogeochemical cycles and their interactions in terrestrial ecosystems.

Offering recorded · Fall 2026

Recent recorded grades — Fall 2023: 3.77 GPA, 93.3% A/AB (n=15 letter grades); Fall 2024: 3.56 GPA, 68.8% A/AB (n=16 letter grades); Fall 2025: 3.59 GPA, 73.9% A/AB (n=23 letter grades).

Chaoqun LuXia Zhu Barker

historical GPA · grades

Fall 2022–Fall 2025 · limited sample
SOILSCI 299

Independent Study

1–3 credits

SOILSCI 299 is an independent study course involving research work under the direct guidance of a faculty member.

Offering recorded · Fall 2026

Thea WhitmanDoug Soldat+5 more

historical GPA · grades

Spring 2022–Spring 2026 · limited sample
SOILSCI 990

Research

1–12 credits

SOILSCI 990 is an independent research and writing course designed to help students complete their dissertation requirements.

Offering recorded · Fall 2026

Thea WhitmanDoug Soldat+15 more

No recorded grade history

Recorded teaching history

Explore courses taught by this instructor →
Browse recorded courses
TermCourseTitle
Fall 2026CHEM 699Directed Study
Fall 2026ENVIRST/SOILSCI 101Forum on the Environment
Fall 2026F&WECOL/SOILSCI 451Environmental Biogeochemistry
Fall 2026SOILSCI 299Independent Study
Fall 2026SOILSCI 799Practicum in Soil Science Teaching
Fall 2026SOILSCI 990Research

Teaching history may be incomplete. Course pages contain course-specific feedback and citations.

Instructor identity & provenance 
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