Statistical Ranking by Language App Efficacy
Based on Written Proficiency by College Placement Test

Rank
Year
Language App
EFFICACY
Study Hours for
One College Semester
Sample
Size
Statistical
Report
Mean
95% CI
Mean
Range
1
2018
14
7-21
19
13-28
102
1, 2
2
2016
13
10-15
21
18-26
325
1, 2
3
2016
12
8-16
22
17-34
144
1, 2
4
2015
LA
11
7-15
25
18-41
101
5
2012
8
6-11
34
26-49
88
1, 2

Explanatory Notes

* The numbers in the table are rounded.
* College Placement Test: Web Based Computer Adaptive Placement Exam (WebCAPE). Spanish WebCAPE Computer-Adaptive Placement Exam by Jerry Larson and Kim Smith, online version Charles Bush. ©1998, 2004 Humanities Technology and Research Support Center, Brigham Young University, link,
* italki: this is a special service that connects users to teachers and tutors; it is not a stand alone language app.
* LA: Start-up language app; the study report was not officially made public.
* Efficacy: Gain in college placement test (WebCAPE points) per one study hour.
* Study Hours for One College Semester: Number of study hours in a two-month study period needed to cover the requirements for first college semester of Spanish.
* 95% CI: 95% confidence interval around the mean.
* Range: Transformed 95% CI limits for efficacy; upper and lower limits divided by the threhold requirement for placement in second college semester of Spanish (270 WebCAPE points).