	1st year		2nd year				3rd year
	fall		spring		fall		spring		fall		improvement
the Interest score	comprehensive academic achievement
fall of first year	0.531	**	0.491	**	0.519	**	0.464	**	0.469	**	0.111	*
spring of 2nd year	0.534	**	0.497	**	0.523	**	0.477	**	0.491	**	0.129	*
fall of 2nd year	0.465	**	0.477	**	0.528	**	0.495	**	0.534	**	0.234	**
spring of 3rd year	0.500	**	0.505	**	0.570	**	0.536	**	0.565	**	0.257	**
fall of 3rd year	0.463	**	0.482	**	0.529	**	0.534	**	0.573	**	0.295	**
the Interest score	listening test
fall of first year	0.312	**	0.305	**	0.288	**	0.285	**	0.326	**
spring of 2nd year	0.316	**	0.297	**	0.262	**	0.294	**	0.352	**
fall of 2nd year	0.278	**	0.277	**	0.298	**	0.255	**	0.383	**
spring of 3rd year	0.266	**	0.284	**	0.277	**	0.312	**	0.382	**
fall of 3rd year	0.226	**	0.228	**	0.296	**	0.266	**	0.391	**
the Interest score	grammar comprehension
fall of first year	0.376	**	0.354	**	0.420	**	0.429	**	0.389	**
spring of 2nd year	0.379	**	0.303	**	0.441	**	0.454	**	0.376	**
fall of 2nd year	0.349	**	0.292	**	0.457	**	0.495	**	0.439	**
spring of 3rd year	0.334	**	0.331	**	0.499	**	0.520	**	0.428	**
fall of 3rd year	0.355	**	0.280	**	0.417	**	0.497	**	0.467	**
the Interest score	conversational reading comprehension
fall of first year	0.309	**	0.337	**	0.372	**	0.397	**	0.342	**
spring of 2nd year	0.359	**	0.372	**	0.338	**	0.362	**	0.328	**
fall of 2nd year	0.299	**	0.379	**	0.317	**	0.402	**	0.357	**
spring of 3rd year	0.322	**	0.374	**	0.366	**	0.439	**	0.370	**
fall of 3rd year	0.271	**	0.315	**	0.347	**	0.415	**	0.395	**
the Interest score	long reading comprehension
fall of first year	0.262	**	0.301	**	0.367	**	0.197	**	0.289	**
spring of 2nd year	0.309	**	0.251	**	0.347	**	0.186	**	0.335	**
fall of 2nd year	0.253	**	0.223	**	0.334	**	0.227	**	0.367	**
spring of 3rd year	0.260	**	0.261	**	0.344	**	0.219	**	0.395	**
fall of 3rd year	0.299	**	0.269	**	0.332	**	0.243	**	0.378	**