Texas Tech University


ALEKS is an online educational product offered by McGraw Hill Education. Several universities use ALEKS online tools to assist students in preparing for their first university-level general chemistry course. The Texas Tech ALEKS course in chemistry was developed from the ALEKS assessment for general chemistry students at the University of Texas.

ALEKS registration is currently $30 for a 90 day access period (paid direct to the publisher).

You will have access to the course for 90 days from the date you register.

An alternative exists for a student who scores 0-20 questions correct (0-57%) on the Chemistry Placement Exam or CPE. Instead of taking CHEM 1301 before 1307, the student has the option to demonstrate content mastery through the ALEKS (Assessment and Learning in Knowledge Spaces) online system. Entry into CHEM 1307 can be permitted by achieving 95% content mastery in the ALEKS Preparation for CHEM 1307 course.

A student may begin the ALEKS Prep for CHEM 1307 course at any time and will meet the prerequisites for CHEM 1307 once they achieve 95% Mastery in ALEKS (through an assessment or assessment plus mastering learning modules to the 95% level). In order to meet the prerequisite for the next term you must achieve 95% prior to the end of the Add/Drop period for that term.

If 95% is achieved after that date, you will be eligible to register for CHEM 1307 in a subsequent term.

Students whose CPE score is 60% or better (21-35 correct) on the CPE may register for and use ALEKS to prepare for CHEM 1307 if they wish.

The following dates give an indication of when it is best to start ALEKS in order to have the best chance of completing it prior to the start of a term. However, anyone reaching 95% Mastery in ALEKS at any time within the 90 day access period will be eligible to register for CHEM 1307 at the next offering.

Term Start of Classes 90 Days Prior to Start
Fall Late August Late May
Spring Mid January Mid October
Summer I Early June Early April


Note: TTU Costa Rica students should select the "Texas Tech University" campus in the US if asked as the course is associated with the main campus.

  1. Go to the ALEKS website: http://www.aleks.com/sign_up
  2. Enter or Copy and Paste the following course code into the box labeled "Using ALEKS with a Class?": LKHNW-XG3YF
  3. Select the course "CHEM 1307 Prep..." for the current term
  4. It is best that you register using your ttu.edu email, even if you already have an ALEKS account under a different email address. Also ensure that you have accurately entered your Texas Tech ID number, known as the "R-number" to ensure that your score is accurately transferred from ALEKS to Texas Tech University.
  5. Go to ALEKS


After completing ALEKS registration, you will enter a guide that demonstrates how to use ALEKS. ALEKS is an adaptive system that tailors the questions and material it presents to you based on what you are ready to learn. It does this by first requiring you to complete an initial assessment after learning how to use the ALEKS system. ALEKS will then determine which topics need to be covered in subsequent learning modules.

The content reviewed in ALEKS includes math topics such as fractions, algebra, rules for exponents, graphing, scientific notation, and significant figures along with chemistry topics like naming binary ionic compounds and calculations involving limiting reactants and precipitation reactions, to name but a few of the course topics covered. These topics were chosen to be consistent with the learning outcomes and material from CHEM 1301, Preparatory Chemistry.

Texas Tech University cannot provide support for the ALEKS system. Please contact ALEKS directly for technical support.



Hours (Eastern Time):
Sunday, 4:00 PM to 1:00 AM
Monday - Thursday, 7:00 AM to 1:00 AM
Friday, 7:00 AM to 9:00 PM

Phone: (714) 619-7090
Fax: (714) 245-7190
Email: contact us at http://support.aleks.com

Department of Chemistry & Biochemistry