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1、A Study on the Quality of Achievement Test Paper of Junior English内容：Abstract: Based on the theory of Bachman & Palmers English language testing theory, this paper aims at analyzing the quality of achievement test papers of Grade8 junior English from the perspective of test validity and reliability.
2、 Then, it will make a further detail analysis about Reading Comprehension and propose some suggestions to improve this part.Keywords: Junior English Testing, test validity, reliability1. IntroductionEnglish language testing is one of the major parts in English teaching and a measurement of education
3、, which assesses the language ability and knowledge according to the result. Thus, English tests have been considered as an assessment mechanism that stimulates the students to achieve more in English and obtain higher scores as well as help the teacher better evaluate the students achievements in E
4、nglish. The author chooses the terminal test papers of junior English as its object of study and probes into analyzing the test validity and reliability of the test paper. The detail analyses are displayed as follows.2. Analysis of the Quality of Test PaperWhen designing a test, the quality of test
5、is one of the most important issues that the teacher must pay more attention to. According to Bachman & Palmer (1999), the criteria for evaluating the quality of a test mainly include the five aspects such as reliability, validity, authenticity, interactiveness and impact. These five aspects are clo
6、sely related to junior English teaching, and is also the key point of this paper. In this paper, the author is intended to analyze the validity and reliability of this terminal achievement test paper for Grade8 Junior English.2.1. Content of the Test PaperThe whole test consists of five parts: liste
7、ning comprehension, which occupies 20% of the total score. Listening Comprehension consists of three parts, Sentence Listening, Dialogue Listening and Passage Listening; Multiple Choice Question, which occupies 15% of the total score; Cloze, 10%; Reading Comprehension, 30%; Task-based Reading, 10%;
8、and the last part, writing, which occupies 15% of the total score.2.2. Reliability EstimateReliability is the extent to which test scores are consistent: a quality assessing whether candidates can get the same results on different dates (assuming there is no change in their ability). Reliability is
9、a property of the test as a measuring instrument, but is also relative to the candidates taking the test: a test may be reliable with one population, but not with another. And next the author will make estimation about this test paper utilizing the instrument-SPSS.The following is the descriptive st
10、atistics of the results of the terminal junior test paper.Graph1 统计量LCMCQClozeRCTBRWritingTSN有效40404040404040缺失0000000均值13.909.954.3025.004.505.8863.50中值14.009.504.0028.005.006.0066.50众数1793286867标准差3.4772.8642.2896.4213.2263.61814.915方差12.0928.2035.24141.23110.41013.087222.462偏度-.605-.712.164-1.840
11、-.005.045-.916偏度的标准误.374.374.374.374.374.374.374峰度-.532.302-1.1052.720-1.203-.903.728峰度的标准误.733.733.733.733.733.733.733极小值63160024极大值1915830101387Where: LC=Listening Comprehension, MCQ=Multiple Choice Question, RC=Reading Comprehension, TBR=Task-based Reading, TS=Total Score.And the following one is
12、 the normal distribution of the students total scores:Graph2From the value of skewness and kurtosis, and the normal distribution of the total score, it can be discovered that the test scores are normally distributed. From the graph, it can be seen that the skewness is -0.916 and kurtosis 0.728, acco
13、rding to the English language testing theory, values for skewness and kurtosis of between -2 and+2 indicate a reasonable normal distribution. That is to say, the data of this paper is reliable. And the standard deviation of this test paper is 14.915, which indicates that the discrimination of studen
14、ts scores is big. Therefore, we can say that the test results are reliable and can reflect test takers language ability and are also the basis for guarantee the whole test papers validity. However, the mean of the fourth part (Reading Comprehension) is 25point, whose total score is 30 point, and the
15、 highest score is 30 point, the lowest one is 6 point. It is because most of the students are familiar with the material of the selected articles in the fourth part. The kurtosis of RC is 2.720, it is a positive kurtosis and indicates that this part is a little easy, and the discrimination of students score is small. The detail analysis of this part will be analyzed later. 2.3. Validity Analysis Briefly, the validity of a test is the extent to which it measures what it is supposed to me
