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2021 Item by Item Results for GRADE 08 SCIENCE AND TECH/ENG

Number of Students Included: 18     Participation Rate = 100.00%

 Codman Academy Charter Public (District) - GRADE 08 SCIENCE AND TECH/ENG ITEM INFORMATION PERCENT OF DISTRICT'S POSSIBLE POINTS ITEM TYPE REPORTING CATEGORY STANDARD ITEM DESC POSSIBLE POINTS CODMAN ACADEMY CHARTER PUBLIC (DISTRICT) STATE DISTRICT-STATE DIFFERENCE 1 SR TE 6.ETS.2.2 Determine properties of a material that should be tested to meet a design criterion for constructing a solution. 1 75% 2 SR PS 7.PS.3.7 Analyze a diagram to determine when an object has the greatest amount of kinetic energy. 1 37% 3 SR LS 8.LS.3.3 Identify a cellular structure that stores instructions for a trait. 1 71% 4 SR ES 6.ESS.1.1 Analyze a model of the Earth-Sun-Moon system to determine that a solar eclipse could be observed from Earth. 1 59% 5 SR TE 6.ETS.1.5 Determine the scale used to make a drawing of an actual object. 1 62% 6 SR PS 6.PS.4.2 Complete a model to show how light interacts with different materials. 1 76% 7 SR LS 8.LS.3.1 Describe how a scientist could determine whether a mutation causes changes to a trait in a bacterial cell. 1 46% 8 SR LS 8.LS.1.5 Distinguish between environmental and hereditary factors influencing the size of an organism. 1 54% 9 SR ES 8.ESS.2.1 Interpret a plate tectonic model to determine that crust will melt as it is subducted. 1 29% 10 SR ES 7.ESS.2.2 Interpret plate tectonic models to determine which model shows an ocean is getting larger and determine why the ocean is getting larger. 1 45% 11 SR ES 8.ESS.2.1 Explain why the total amount of crust on Earth remains relatively the same. 1 77% 12 CR ES 6.ESS.2.3 Identify the type of energy responsible for convection currents and explain why volcanoes and earthquakes occur near plate boundaries. 3 26% 13 CR LS 6.LS.1.3 Identify body systems that are involved in getting nutrients from food to different parts of the body and describe how the systems work together. 3 27% 14 CR TE 7.ETS.1.2 Use a decision matrix to determine how well different types of objects meet the criteria for building a design solution and explain the reasoning for those determinations. 2 48% 15 SR LS 8.LS.3.4 Use a model of chromosomes in a body cell to determine the number of chromosomes an organism inherits from each parent. 1 45% 16 SR PS 6.PS.1.7 Compare the densities of different samples of a gas by analyzing particulate models of the samples. 2 43% 17 SR TE 7.ETS.3.1 Identify the component of a communication system that converts a message into a digital signal. 1 26% 18 SR PS 8.PS.1.2 Determine in which situation a chemical reaction is occurring. 1 48% 19 SR PS 8.PS.1.1 Determine that a pair of chemical models represents two compounds. 1 37% 20 SR TE 7.ETS.3.5 Classify a part of a given communication system as feedback. 1 35% 21 SR LS 7.LS.2.5 Determine which action will most likely help protect populations of a certain organism. 1 78% 22 SR LS 8.LS.4.4 Explain how new species can arise in different environmental conditions. 1 57% 23 SR PS 7.PS.3.6 Complete a model to show how heat flows from warmer areas to colder areas. 1 30% 24 SR PS 8.PS.1.4 Analyze temperature data from an experiment to predict missing temperatures at a given time. 1 74% 25 SR PS 8.PS.1.5 Determine the mass of products after a chemical reaction has occurred. 1 76% 26 CR PS 7.PS.3.3 Evaluate the effectiveness of a device designed to minimize thermal energy transfer, and describe and explain how design changes will improve the device. 3 42% 27 CR TE 7.ETS.3.4 Identify live loads, tension forces, and compression forces in a system and describe how those forces act on the system. 3 30% 28 SR ES 8.ESS.2.5 Describe how the amount of moisture in air changes as air moves over an ocean and then over a mountain. 2 38% 29 SR TE 7.ETS.3.3 Use a diagram of a vehicle to classify some of its parts into transportation subsystems. 1 66% 30 CR ES 8.ESS.1.2 Analyze a diagram to compare how the strength of the gravitational force between two objects changes when the position or mass of one of the objects changes. 2 36% 31 SR LS 8.LS.3.2 Describe an advantage and a disadvantage of asexual reproduction in bacteria. 2 58% 32 SR ES 8.ESS.1.1 Explain what causes seasonal differences in hours of daylight. 1 69% 33 SR LS 7.LS.1.4 Determine and explain the changes to flowering plant populations when the size of an insect population changes. 1 66% 34 SR ES 8.ESS.3.5 Use a graph to determine changes in carbon dioxide levels in the atmosphere and identify several activities that have contributed to these changes. 1 71% 35 SR LS 7.LS.2.3 Interpret a food web to determine one way energy flows through an ecosystem. 1 84% 36 SR TE 8.ETS.2.5 Determine that the manufacturing process of conditioning occurs in a given scenario. 1 57% 37 SR LS 7.LS.2.2 Analyze information to determine that the type of ecological relationship between two organisms is mutually beneficial. 1 85% 38 SR TE 6.ETS.2.3 Use a ruler to determine the appropriate location to cut a wooden rod. 1 81% 39 SR PS 6.PS.4.1 Use a model to identify the characteristic of a wave that is related to the amount of energy carried in that wave. 1 53% 40 SR PS 7.PS.2.3 Complete a model to show how pairs of spheres behave, depending on each sphere's electric charge. 1 57% 41 SR LS 6.LS.4.1 Use fossil evidence to determine how the environment of a location changed over time. 1 82%

Notes: Students in grades 3-8 took a shorter version of the tests in spring 2021. Item results are not reported if fewer than 10 students in the school or district answered the item.

Participation rates varied across schools, districts, and student groups in 2021 more than in prior years. If the participation rate in 2021 was lower than in prior years, results may have been different if more students had taken the test.