During one day, a questionnaire assessing previous breakfast habits will be given to participants. This questionnaire asks how many days per week they consume various breakfast foods. There are 17 breakfast options, and they will report how many times per week they have consumed them over the past month. The options include never, 1-2 times per week, 3-4 times per week, 5-6 times per week, or every day.

During one day, a questionnaire asking the participants what happens when participants consume breakfast and skip breakfast will be administered. They will be given a list of choices (multiple selections are allowed) and the units for analysis will be binary (they chose it or did not choose it).

During one day, questionnaires assessing typical snacking behavior will be completed once. Participants will be asked how many times they ate 18 specific foods/food groups throughout the past week. The options include none, 1 total, 2-4 total, 5-6 total, 1 each day, 2-3 each day, or 4+ each day. The students will complete these on their respective Chromebook laptops or will be provided paper copies (if their Chromebook is not available).

During one day, cognitive performance assessments will occur once prior to lunch and after breakfast using the online CNS Vital Signs neurocognitive assessment system during one day. The CNS Vital Signs system contains a battery of computerized tests to assess attention, memory, executive function, and cognitive flexibility. The assessment will occur outside of classroom learning activities.

Questionnaires assessing hunger will be completed during the following times for 3 consecutive days: before breakfast, immediately after breakfast, 60 minutes after breakfast, 120 minutes after breakfast, and before lunch. The questions are worded as "how strong is your feeling of" or "how strong is your desire" with anchors of "not at all" to "extremely." The students will complete these on their respective Chromebook laptops or will be provided paper copies (if their Chromebook is not available). All results will be a number from 0 ("not at all") to 100 ("extremely") with the unit "of out of 100."

Questionnaires assessing fullness will be completed during the following times for 3 consecutive days: before breakfast, immediately after breakfast, 60 minutes after breakfast, 120 minutes after breakfast, and before lunch. The questions are worded as "how strong is your feeling of" or "how strong is your desire" with anchors of "not at all" to "extremely." The students will complete these on their respective Chromebook laptops or will be provided paper copies (if their Chromebook is not available). All results will be a number from 0 ("not at all") to 100 ("extremely") with the unit "of out of 100."

Questionnaires assessing prospective food consumption will be completed during the following times for 3 consecutive days: before breakfast, immediately after breakfast, 60 minutes after breakfast, 120 minutes after breakfast, and before lunch. The questions are worded as "how strong is your feeling of" or "how strong is your desire" with anchors of "not at all" to "extremely." The students will complete these on their respective Chromebook laptops or will be provided paper copies (if their Chromebook is not available). All results will be a number from 0 ("not at all") to 100 ("extremely") with the unit "of out of 100."

Questionnaires assessing energy will be completed during the following times for 3 consecutive days: before breakfast, immediately after breakfast, 60 minutes after breakfast, 120 minutes after breakfast, before lunch. The questions are worded as "how strong is your feeling of" or "how strong is your desire" with anchors of "not at all" to "extremely." The students will complete these on their respective Chromebook laptops or will be provided paper copies (if their Chromebook is not available). All results will be a number from 0 ("not at all") to 100 ("extremely") with the unit "of out of 100."

Questionnaires assessing sleepiness will be completed during the following times for 3 consecutive days: before breakfast, immediately after breakfast, 60 minutes after breakfast, 120 minutes after breakfast, before lunch. The questions are worded as "how strong is your feeling of" or "how strong is your desire" with anchors of "not at all" to "extremely." The students will complete these on their respective Chromebook laptops or will be provided paper copies (if their Chromebook is not available). All results will be a number from 0 ("not at all") to 100 ("extremely") with the unit "of out of 100."

Questionnaires assessing happiness will be completed during the following times for 3 consecutive days: before breakfast, immediately after breakfast, 60 minutes after breakfast, 120 minutes after breakfast, before lunch. The questions are worded as "how strong is your feeling of" or "how strong is your desire" with anchors of "not at all" to "extremely." The students will complete these on their respective Chromebook laptops or will be provided paper copies (if their Chromebook is not available). All results will be a number from 0 ("not at all") to 100 ("extremely") with the unit "of out of 100."

Questionnaires assessing stress levels will be completed during the following times for 3 consecutive days: before breakfast, immediately after breakfast, 60 minutes after breakfast, 120 minutes after breakfast, before lunch. The questions are worded as "how strong is your feeling of" or "how strong is your desire" with anchors of "not at all" to "extremely." The students will complete these on their respective Chromebook laptops or will be provided paper copies (if their Chromebook is not available). All results will be a number from 0 ("not at all") to 100 ("extremely") with the unit "of out of 100."

For 5 days, the students will be asked to place all uneaten breakfasts into labeled baggies and discard in the bins at the front of the room. Research staff will weigh the meals prior to being delivered to the hallway kiosks and will re-weight the meals once the students are finished with breakfast.

Body mass index (units of kg/m^2) will be calculated based on body weight and height of participants. Body weight will be measured to the nearest tenth of a kg using a standard scale. Height will be assessed with a stadiometer or wall ruler (to the nearest tenth of a centimeter). Both procedures will be measured in a private room.