Dr. Carol A. Chapelle和他的爱荷华州立大学的同事调研了20名来自玻利维亚和秘鲁的英语老师参加培生TESOL/TEFL认证课程（简称TDI）的影响；
来自乌拉圭蒙得维的亚国家公共教育管理局的Dr. Gabriel Díaz和来自圣达菲利托罗尔大学 的Dr. Daniel Fernández，对21名来自乌拉圭和阿根廷的参加了TDI项目的英语老师做了调研。
他们对参加两个不同TDI模块的教师进行测试，每项研究呈现一组独特的数据，综合来看，这些数据形成了一个可量化的、令人信服的论点，证实了TDI的有效性。
研究人员根据六个理想标准测量了每位教师的课程学习经验：
content and language learning potential
meaning focus
learner fit
impact
authenticity
practicality
PS：为了评估TDI模块英语教学基础的有效性，Chapelle等人采用了被广泛接受的由Chapelle（2001）开发的CALL（计算机辅助语言学习）评估概念框架。专门为评估语言学习材料而开发的，称之为crite-ria，它能捕捉到人们期望在语言和教师教育材料中找到的重要品质。
该调查报告，有兴趣的伙伴可以上谷歌搜索下载了解，下面所示图片均来自该报告。
Learning Potential
Investigators first questioned if teachers believed that TDI allowed them to focus on course content and the language necessary to understand the content. Teach- ers were asked to rate TDI’s learning potential in thir- teen categories. They also rated the TDI module overall. Teachers’ ratings were determined by analyzing their re- sponses to a four-point Likert scale survey. The results of the survey, shown in Chart 1, are dramatic. Universally, teachers valued the learning potential of TDI. As the top line shows, in their assessment of the overall course, 95% of the teachers agreed that there is significant learn- ing potential in every TDI component.
TESOL/TEFL课程的每个模块，有95%的学员认为课程有非常大的学习潜力，给出了积极的反馈。
the course content
To measure how well teachers retained the TDI module content, researchers averaged the results of a series of five quizzes and a module test. Chart 2 demonstrates that, on average, teachers retained > 90% of the TDI module content. Researchers also found “excellent” content learning potential when viewed on a per test (90.25%) or per teacher (90.25%) basis.
课程内容被认定为优秀。
Suits teacher
learning methods
Every teacher that participated in the TDI course indicat- ed that TDI suited their needs and learning characteris- tics. In response to survey questions, Chart 3 shows that 75% of the teachers scored TDI’s instructional approach as “very” appropriate, while 25% claimed “somewhat” appropriate. In their e-mails, teachers made positive statements indicating that TDI’s learning materials and tasks were clear and targeted to their levels of ability. An overwhelming 85% of teachers found TDI suitable for their needs and characteristics, and 15% viewed it as “somewhat” suitable.
几乎所有老师认为，TESOL/TEFL课程符合及满足学员的学习需求。
have a positive
impact on teachers
Using a four-point Likert scale survey and one open- ended survey question, researchers quantified the im- pact of TDI on teachers. Chart 4 shows:
90% of the teachers like TDI “very much.”
90%的老师认为课程是非常喜欢的
75% found TDI motivating.
75%的老师认为课程具有非常大的激励作用
70% claimed TDI helped them grow professionally and intellectually.
70%的学员认为课程对其教学技能的提升以及智力提升方面有非常大的作用
60% developed some new learning strategies in the course.
60%的学员认为在课程中学到了新的教学策略或者技巧。
Apply Well
In survey responses, 85% of the teachers saw a strong connection between the content of the TDI materials and their instructional needs, while 15% claimed “some- what” of a connection (Chart 5). These results were sup- ported by nine teachers’ favorable e-mail comments.
课程与她们在实践教学中有非常大的联系或者指导意义。
Easy to Use
Teachers were asked to rate the quality of their online TDI experience. Despite having a wide range of Inter- net accessibility and varying levels of computer literacy, Chart 6 shows that 95% of the teachers liked the over- all usability and practicality of the course “very much.” Regarding technical issues with TDI, observations included:
• 45% of the teachers had no technical problems.
• 45% experienced such problems “occasionally.”
• only 10% had to “frequently” deal with technical
issues.
Teachers who had occasional technical problems said that those were solved as soon as they brought the dif- ficulty to their instructor’s attention.
95%的学员，认为是非常喜欢这个课程。
Rating
A summary of the data that researchers collected is shown in Chart 7. In every category examined, teach- ers rated TDI learning qualities positively. From a strong body of evidence, the researchers concluded that TDI was an appropriate instructional tool. Specifically, TDI provided materials and an environment that:
• fostered a considerable degree of learning.
• adequately directed learners’ attention to the meaning of the course content.
• fit learners well in terms of instructional design,materials, and tasks.
• had positive effects on learners.
• ensured a correspondence between the content and activities in the course and the target professional needs of the students.
• provided adequate technology and resources.
Furthermore, researchers reported that TDI gave teach- ers several opportunities to review, learn, and explore new ways of teaching.
在每个环节的调查中，老师都给出了积极反馈和评价，认为该课程是非常好的教学工具或者教学帮手。
All teachers experienced
learning gains
总结：我们提供的TEFL/TESOL认证课程（TDI）获得了所有学习者的积极评价和认可，总体而言这个认证课程可以为老师提供超乎期望的有效性，是英语老师提升教学技能的有力工具，相应的TEFL/TESOL证书在业内有着极高的权威性和专业性。
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