Case 1: Statistics - EdvalPTN Parent Teacher Interviews

Case Study 1: Raw Statistics

Shows historical data, together with actual values for each solution variant:

These values may be verified by contacting Tenison Woods College.

	Historical Event	EdvalPTN Default	EdvalPTN Late Meal	EdvalPTN Parent Focus	EdvalPTN Teacher Focus
Total parent time-waste (Hrs)	19:50	5:10	3:50	1:00	9:30
Parent maximum wait (Hrs)	3:00	1:20	0:50	0:30	2:20
No. of parents with time-waste	43	11	9	4	17
Parent maximum congestion	10	4	2	1	6
Parent average congestion	4.3	1.1	0.8	0.2	2
Teacher time waste (Hrs. From teacher start-time)	30:50	16:40	17:50	26:00	15:30
Teacher time-waste(Hrs. From event start-time)	37:30	23:50	26:40	36:00	21:40
Teacher average time-waste (Hrs)	0:57	0:31	0:33	0:48	0:29
Teacher early-mark (Hrs)	22:00	39:10	38:20	23:30	42:40

Case Study 1: Comparative difference (Values)
Shows differences (savings) in actual values relative to the historical event:

	Historical Event (Saving)	EdvalPTN Default (Saving)	EdvalPTN Late Meal (Saving)	EdvalPTN Parent Focus (Saving)	EdvalPTN Teacher Focus (Saving)
Total parent time-waste (Hrs)	0	14:40	16:00	18:50	10:20
Parent maximum wait (Hrs)	0	1:40	2:10	2:30	0:40
No. of parents with time-waste (Hrs)	0	32	34	39	26
Parent maximum congestion	0	6	8	9	4
Parent average congestion	0	3.2	3.5	4.1	2.3
Teacher time-waste (Hrs. From teacher start)	0	14:10	13:00	4:50	15:20
Teacher time-waste (Hrs. From event start)	0	13:40	10:50	1:30	15:10
Teacher average time-waste (Hrs.)	0	0:26	0:24	0:09	0:28
Teacher early-mark (Hrs)	0	6:50	17:10	16:20	20:40

Missing metrics in this study:

Teacher time waste organising schedules with a student-led method.
- If 100 students see just 4 teachers for 90 seconds each, this equates to 10 hours of teacher time lost to schedule their administration. This is not lost under more efficient methods. More time is also lost under school-led systems due to complexity of managing multiple teacher schedules at the same time.
Parent time waste in schedule administration.
- If 150 parents take 5 minutes in schedule administration, this equates to over 12 hoursof parent time-waste negotiating time availability. This is significantly reduced under a preference system as it requires no negotiation of times.
Parent time waste under a student-led system
- This study was based on a school-led system which has significantly lower parent time waste due to central control. Student-led systems require far higher levels of parent time waste as they are far less efficient due to decentralised scheduling.
Interviews granted.
- Case study 1 had no source data for interviews requested but not granted. See Study 2which shows EdvalPTN batch granted 20 more interview requests than the actual event achieved.
Quality of interviews granted.
- Without access to the raw interview request data, this study was unable to compare the increase in the quality of preferences satisfied. EdvalPTN considered parent priorities when scheduling.
Educational benefits.
- There are profound educational benefits in using a parent priority scheduling system compared to a student-led system, though this metric is not easily quantified.

Case Study 1: Comparative difference (Percentage)
Differences (savings) in percentage values relative to the historical event:

	Historical Event (Saving %)	EdvalPTN Default(Saving %)	EdvalPTN Late Meal (Saving %)	EdvalPTN Parent Focus (Saving %)	EdvalPTN Teacher Focus (Saving %)
Total parent time-waste (Hrs)	0	74%	81%	95%	52%
Parent maximum wait (Hrs)	0	56%	72%	83%	22%
No. of parents with time-waste	0	74%	79%	91%	60%
Parent maximum congestion	0	60%	80%	90%	40%
Parent average congestion	0	74%	81%	95%	53%
Teacher time waste (Hrs. From teacher start-time)	0	46%	42%	16%	50%
Teacher time-waste(Hrs. From event start-time)	0	36%	29%	4%	40%
Teacher average time-waste (Hrs)	0	46%	42%	16%	49%
Teacher early-mark (Hrs)	0	31%	78%	74%	94%

Legend for Statistic Fields

Total parent time-waste	Sum time parents are waiting idle around at the event between their interviews (Hrs)
Parent maximum wait	Longest wait for any parent (Hrs)
No. of parents with time-waste	Number of affected parents that have time waste in their schedule
Parent maximum congestion	Highest number of waiting parents on site at any one time (Crowding)
Parent average congestion	Average number ot waiting parents on site at any one time
Teacher time waste (From teacher start-time)	Sum time teachers are waiting idle around at the event between their first and their last interview. Teachers attend event from their first interview. Does not include meals. (Hrs)
Teacher time-waste (From event start-time)	As above but including wasted time from event start to each teachers first interview. Teachers attend event from event start even if they have gaps. (Hrs)
Teacher average time-waste	Average teacher time waste across all teachers and all slots, from teacher start to each teacher’s last interview (Hrs)
Teacher early-mark	Sum time that all teachers have been able to leave the event early (Sum of time from each teachers last interview to the event end) (Hrs)